Is It True the T-Rex Couldn't See You If You Didn't Move?
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- čas přidán 17. 10. 2019
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In the video today, we're examining whether it is true that a T-rex couldn't see you if you didn't move, as well as examining how scientists know what they could see or not see at all.
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Sources:
www.thefreelibrary.com/Sight+f...
www.ggmcreation.com/bio.php
ix.cs.uoregon.edu/~kent/paleon...
www.ucmp.berkeley.edu/diapsids...
www.livescience.com/1410-rex-r...
ix.cs.uoregon.edu/~kent/paleon...
mentalfloss.com/article/31503/...
mentalfloss.com/article/31503/...
whyfiles.org/shorties/099run_d...
animaldiversity.ummz.umich.edu...
uofa.ualberta.ca/dinosaurs/myt...
www.cs.uoregon.edu/People/Facu...
www.thefrog.org/biology/vision...
amphibiaweb.org/cgi/amphib_que...
www.reptilecity.com/Merchant2/...
student.societyforscience.org...
www.livescience.com/32202-how-...
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It sounds brilliant
I'm interested in if humans were gone from earth, what plant would dominate? I was wondering if it would be bamboo or kudzu. What do you think?
It would probably differ for each country
I always love your well researched and produced videos, sir.
actualy if the t rex' top speed was 32 mph the chase scene would be realistic. he wasnt a profesional driver, driving on a wet muddy road in a vehicle that wesnt modified to do top speed in those conditions. 30 to 40 mph would have been about as fast as you could safely go in those conditions without potentialy killing yourself any way
"I have a big head and little arms, and I'm not sure how well this plan was thought through. Master?"
I'm so happy to see this comment! I absolutely adore Meet the Robinson's!
Thanks now I have to watch meet the robinsons!😁
Where is the
Tim McLaughlin *[slaps a crazy hat on your head]*
DaMonkie y
It is basically a giant mouth on legs so seems like a safe assumption it would be good at finding things to put into its giant mouth.
Right. Maybe it's like a cat that chases things that are moving
@@SoulDelSol
Dogs do that too. If it is like that then not moving may be a good option. Also a dog will back away from a smaller animal that moves towards it. They seem to find it unsettling.
@@kensmith5694 so what you're saying is i should chase a t rex if i come across one in the woods
@Dan
Moving slowly while making yourself appear bigger and making lots of noise is the general go-to tactic for dealing with predators, but I wouldn't recommend trying that with something the size of a t-rex.:P
Small fast moving things typically ignite their hunting instincts, its unknown unexpected things that freak them out.
@@SoulDelSol
You have 3 options:
1) Run away
2) Freeze
3) Run towards.
In 2 out of 3 cases, you likely end up all worn out and dead. In the other you only end up dead so it is better.
Some time traveler somewhere tried this and failed miserably.
😂😂🤣🤣 🤣
I've always wondered if we got the colours absolutely wrong. A pink T-Rex doesn't invoke as much fear or interest.
@@andycopland3179 speak for yourself.... all my Rhodophobia brothers and sisters we need to stand together in unison
u mean "some time traveler some-when tried thi......" XD
Traveling in time backwards(physically) is impossible
The t-rex had the best Eye sight out of any animal that has ever lived on planet earth. It most definitely would have seen any prey standing still
In the sequel book "The Lost World" one character tries to employ the tactic of not moving to avoid being eaten by T-Rex... and is immediately eaten, iirc (I was literally a child when I read it) Ian Malcolm even thinks he's an idiot for doing so. I always wondered if it was a commentary about the movie somehow, or just a corrective retcon by Chrichton.
It's a retcon type thing. In the 2nd book he explains why people used to think the t-rex and how the research from [insert name here] proved that was wrong. Like you said, Crichton researched and found one thing, later found it was wrong and explained the new thing
@@oldmanfran5523 Michael Crichton also retconned (in Lost World) the T-Rex's behavior as a dino who just ate a goat, so wasn't as hungry enough to be as aggressive (like predators in zoos are more docile by being constantly well fed).
What everyone has said. The explanation in-book was that those particular rexes were created by splicing in different species' genetic material than the rex on the main island. Also: the character in question was Dodgson, ("Dodgson! We've got Dodgson here! See? Nobody cares.") and he wasn't immediately eaten but rather carried back to the nest so that the baby rex could practice its hunting skills. So the scene at the end of the second movie, but in the jungle.
Nah, the T-Rex in first movie preferred running/moving prey cause it was more fun
Also, it had eaten just before it was sniffing Sarah so it just ignored two non moving,non screaming(non fun ) prey 😸
@@FrarmerFrank Sarah wasn't in the first movie. Are you talking about Lex (the girl)?
Due to its enlarged olfactory area of the brain, there is a debate as to whether Trex was an avid hunter or preferred carrion by smelling it out.
But having raised chicken in a barnyard setting I found that chickens will hunt and completely devour any bug, lizard, or small snake they come across. And if an unlucky lizard etc freezes on the spot it doesn't matter........the chicken will attack the unmoving creature.
Chickens will eat carrion too. I've seen people dress out a slaughtered chicken and toss the entrails and head into the yard for the dogs.........but the chickens will often get to these "treats" first and gorge themselved like cannibals.
So since chickens are analogues to Trex; Trex must have survived by hunting AND by smelling out carrion as well.
Charles Martin This is like arguing that your dog can dive to 4000 feet to hunt squid because it’s a mammal and so is the sperm whale.
If the T. rex is related to chickens, this argument is spot on. They’d hunt and smell.
Joseph Izzo And the dog would find the ball by echolocation.
The Tyrannosaurus was no more related to the chicken than it is to any bird. If you want to base your theories about it’s behavior on “ wutcha seen yer chickens do”. Then you can also assume a few more things
“TRex, known parrot relative, was probably talented mimic. It likely roosted in trees at night in flocks sometimes numbering in the thousands.”
“TRex may have been able to dive at speeds of 250mph while perusing prey much like the modern day peregrine falcon.”
“Modern day burrowing owls live in prairie-dog burrows. No doubt the TRex shared this trait.”
“Highly social, it’s probable that Tyrannosaurus spent much of the winter living on the ice shelf raising its young. With the thaw they would return to the sea. A behavior seen still today in their modern relative the penguin.”
The chicken is one of the most domesticated animals on the planet. Many of its behaviors aren’t seen in even its close wild fowl relatives. But you expect to infer something useful about the behavior of a dinosaur.
Vincent Delgado ~ I’m just basing it on what was said in the video but your conclusions sound pretty spot on to me ~ you don’t think the Trex roosted in trees?
Roughly a decade ago biochemists undertook a large scale comparison of the DNA of a Tyrannosaurus rex with extant modern bird and lizard species, and determined the chicken is indeed the closest living relative to the T Rex, followed by the ostrich and much more distantly, the alligator.
So. Being that the scientific community DOES accept the chicken as analogous to the T Rex (so much so that in order to study the locomotion of T Rex, four or five years ago researchers from the University of Chile and the University of Chicago attached prosthetic tails to chickens to extrapolate to computer models. Furthermore, chicken embryos can be reverse engineered to have snouts with teeth very similar to juvenile tyrannosaurids, unlike other bird species), @Charles Martin is making a fair comparison and a reasonable deduction regarding T Rex dietary preferences given the current body of research.
...perhaps someone ought to exercise their ocular muscles perusing a little peer-reviewed research instead of their ham fists for banging out some drivel about dogs and whales and parrots 🙂 have a lovely day all
Even in the Jurassic Park movie, at inches away, the t-rex’s sense of smell and taste would hone in on those 2.
That thing about not seeing you if you don’t move is just a plot device.
Might be they just smelt disgusting.
Yeah, it basically said "you guys are no fun" and wondered off(it wanted them to run so it could chase them)
They smelled like mud
Next Video by Simon: How to Raptorproof your doors by replacing all your doorknobs with round ones- promoted by Kwikset.
*Medeco
MAKE.IT.HAPPEN!!!!!
Sounds like you'd have problems with ADA
Not really good enough considering dogs with practice can open them.
Door knobs are already round hense why they're called knobs, you replace doir handles with knobs is what you meant ;)
So those chicken nuggets are really dinosaur meat?
Sweeeeeeet.
Technically, YES!
McDonald's is missing some major upgrading in branding by not cashing in on things like the McDinosaur sandwich, the Egg McDinosaur, the Ultimate Dinosaur Sandwich, etc. ;-)
@@TodayIFoundOut Quick, trademark those while you still ca... To late 🤔 they already did, I swear.
@@TodayIFoundOut They'd have to change their name to McDino.
Are nuggets real meat?
Also, there's the parallax effect when the head moves in space helping even monocular vision determine depth... And while even human eyes have problems discerning stuff that don't change that's one of the reasons why our eyes usually dart around with micro movements. It forces our visual receptors to consider the area as new and worth sampling. And I also think it is a big factor in how tunnel vision works. You focus on one thing. Eyes stop moving, and peripheral vision (the area more susceptible to this) starts to drop off and the vision subsequently narrows.
His eyes might of been just fine, but he was doomed if he had to scratch his arse.
He could've scratched it with a tree somehow I guess...
Hahaha😂😂😂
Would’ve went all dog, sat down and dragged his hindlegs, and therefore, hind end, across the ferny and grassy late Cretaceous floor.
Perhaps that's why he had a long tail
i was gonna say or tickle his pickle but the rex from Jurassic chicken 1 was more rexanne not rex, well roberta to be specific
Birds arguably have the greatest visual acuity of the entire animal kingdom. Make it an owl, & then it can see in the dark as well.
dafttool Owl eyes are so large that they can’t move in their sockets. That’s why owls need the ability to turn their necks 360 degrees. Owls are crazy.
Birds have awesome vision. Strangely enough fish have better vision than mammals.
@@jonstfrancis
Big types of squid may have even better. The cells in their eyes have the wiring off the back instead of off the front like we have.
@@kensmith5694 Curious! Trilobites had crystal eyes, not sure how well they saw though. But amazing all the same.
@@jonstfrancis
We would have to pick a trilobite to give an eye test to. IIRC the eyes were all over the map in design. They were all sorts of fixed focus because crystals don't bend well. CaSO4 is sort of an odd thing to make an eye lens out of. As a crystal it will have two different speed of light numbers depending on the polarization.
There's an interesting tidbit missing from the Velociraptor bonus-fact. Namely, back when Crichton was writing the book, Deinonychus WAS a Velociraptor. At the time, 'Velociraptor' was generally used as a term for that general family of small-to-medium-sized predatory dinosaurs that both Velociraptor and Deinonychus belong to, and it was only around the time of the book's publication that the taxonomists settled on 'dromaeosaurid' as the official term for that particular family. So, rather than using a wrong name just because it sounded more dramatic, Crichton just used a more GENERAL name... because it sounded more dramatic. 'course, Spielberg had no such excuse...
Spielberg's excuse would be because Crichton called them velociraptors.
In the novel Dr.Grant specifically says, that Deinonychus and Velociraptor were the same genus, not just a general term. Dr. Wu even mentions, that the Velociraptors in the books are V.mongoliensis. It's likely he used Gregory S. Pauls classification, where a new species, V.antirrhopus instead of D.antirrhopus, was created although it never really catched up within the scientific community and even Paul himself has since abandoned that view.
This is a popular myth but it is also untrue. One single book described deinonychus as being in the same genus as Velociraptor, and it was written by someone who wasn't even a palaeontologist. It has NEVER been the scientific consensus that deinonychus belonged in the same genus as velociraptor. it just so happens that Crichton referenced that one particular book when he wrote Jurassic Park.
@@Magmafrost13 That so? Interesting... well, using a single source is always risky. As illustrated by me parroting a 'fun fact' I heard from a single source! :P
I'm more annoyed that Crichton and Spielberg turned down the chance to make "Deinonychus" into a scary, household name :D
“But you would never miss such an error” one smooth transition into an ad 😂
Simon is the master at that
gotta admit though, that is one of the best scenes in movie history!
Eric, Yeah I agree! I’ve seen it 100 times, I KNOW what happens, and I still tense up!
@Physique0 And it's funny because we all know he deserved it.
Just imagine a dino wearing glasses and looking at you.
And then having a heartwarming moment at its first moment of clear vision like those viral videos of babies doing that. Of course, being a T. rex, it's already got a permanent big grin...
Going a "tad deeper" good frog pun. Good frog pun...
It's the little things ;-) -Daven
haha, i was wondering if that was a pun, or just coincidence.
Irrelevant if the T-Rex couldn't see you because it would 100% SMELL you.
...especially, if you farted in front of it! ☝😝💨😲😰😱
@@mcgannahanskyjellyfetti1663 More like shit yourself with fear lol.
We may smell bad to them. We are not the usual food.
@@kensmith5694 That may be very true, the same can be said of Sharks. Most Sharks don't like the taste of Humans and let go after that first bite. Unfortunately for the Human that first bite can be the last thing they encounter.
@@bookcadenb4584
Wow... I didn't know that. Thank you for the info 👌
If an animal couldn't see non-moving objects, it wouldn't be able to see rocks, trees, the ground, cliffs, lakes, or it's presumably dead food.
The idea of any animal not being able to see stationary objects is ridiculous.
Good point
Not necessarily. What they're talking about is movement "catching" your eye. You can see your environment but things blend in until something moves and disrupts that picture.
@@naiaddore1797 The T. Rex bit is still absurd, though.
@@globin3477 Just a bit :D
Maybe they just meant that if you are close enough to the T-Rex, and his head was pointed straight at you, his big snout would block his line of sight to you. (But yeah, he would still smell you.)
Well, if velociraptors were like turkeys, specifically the wild turkey, they were jerks. Wild turkeys are major jerks.
Wild turkeys were, this past year, attacking people (mailmen in particular) in a Cleveland, OH suburb.
They make a good Bourbon though.
Bit like the cassowary here in Oz
@@worldofdoom995 -Ah, yes American honey.
Nothing is worse than geese lol
Michael Crichton is one of my favorite authors. Jurassic Park is my favorite novel. I love the amount of research he put into writing his books, and his ability to craft a thrilling tale based around whatever technology was getting a lot of attention at the time. One detail that people miss in the book (this video touched on it) is how Dr. Grant didn't believe that the T-Rex had poor vision, it was just a lucky handicap that that particular Rex had due to its hybrid DNA (and human error, if we're being honest) that allowed Grant to survive its escape. Crichton then basically debunked the "T-Rex can only see moving things" theory in his sequel novel The Lost World, where a guy who was trying to steal a T-Rex egg freezes when the mother comes because he stupidly believed that theory, and got eaten for it.
The discrepency about the chase scene with the Rex has driven me absolutely nuts for years, lol...
Everyone seems to think that the jeep was plowing along at higher than the Rexes stated top speed in the movie (32 MPH). But, as both a car guy and a Paleontologist, I noticed a discrepancy that seems to have been missed by many people. Because of this exact reason, I've watched the chase scene probably 10 times tonight alone. Please allow me to clarify :)
Here. is. the. thing.
That particular Jeep was a manual transmission model, a 1992 Wrangler YJ Sahara trim. The camera even zooms in to point this out at several points. Now, if you pay careful attention to the shifting done by Muldoon as they attempted to get away from Rexie, The vehicle began the chase in 1st gear (ideally the gear you'd want to be in.) It did appear that he had managed to get the vehicle into 3rd gear at some point, but upon shifting into 4th, Ian climbed backwards out of the back seat and into the front passenger compartment, knocking the vehicle out of gear.
I suppose as we get further and further away from the release date of Jurassic Park, people are becoming more unfamiliar with how a manual transmission works now that automatics are ubiquitous across the board, and few cars are even offered with a manual option anymore. As time has gone on and the industry has moved on, perhaps people don't understand what's actually happening in that vehicle's drive train during that particular sequence.
Now, the Sahara model (the Jeep Wrangler in question) included the I6 engine, 292 Cubic inches of displacement, producing 190 HP. Not a bad engine, I have one in my ZJ, however, it is no Hemi, pushing 390 HP, like my ram has either... With the manual transmissions available in the 92 YJ, it was capable of 0-60 in about 8 seconds. This claim can be assumed to be made from "ideal conditions". It was probably measured with the vehicle on a test track, dry pavement, with the drive train in Rear Wheel Drive, not 4WD. This number is usually also claimed from the best of the best runs, It probably does not include the terrible 0-60 times in the average. So, what 0-60 in so many seconds is saying, is "If everything goes perfectly, you can do this time in your vehicle"
That time is only going to get longer as you begin changing those factors.
Let's break down the chase scene then. The Jeep starts from a standstill, on a muddy service trail, immediately following a torrential downpour (which is why Nedry ended up in the ditch, then in the Dilo's belly). The Jeep, no doubt was in 4WD at this point. This consequently effectively halves the power delivered to each axle. The actual power delivery is even less than half of the total HP, due to kinetic energy being converted to heat, etc etc... Muldoon hops in, starts the engine, and dumps the clutch (I know, right? what's that???) spinning the tires a bit (pedantic, but it would have delayed the jeep even further from reaching its 0-60 time.) I could not locate any exact numbers, but in my experience driving YJs, you're lucky to reach 40 MPH in 3rd gear with the engine rapped out on an I6. We're talking a vehicle with a TOP SPEED of 104 MPH in 5th gear. A prius has a higher top speed than that... City driving will find your transmission on an older YJ in either 3rd or 4th gear most of the time. That vehicle in 1st gear, in terrible, off road conditions, probably topped at 8-10 MPH before it had to be shifted into 2nd, then probably rapped out around 15-18 MPH in second gear. By the time Muldoon got the vehicle into 3rd gear, they were probably moving ~20MPH... Maybe. I would assume they were moving about 35 MPH when he shifted to 4th, if he was shifting normally and not redlining the engine in 3rd gear.
Then Ian panicked and did the inconvenient thing that almost got them all killed.
Malcolm knocking the vehicle out of gear, thanks to the manual transmission, would have immediately robbed the wheels of power, and therefore acceleration. At this point, the engine has been completely decoupled from the wheels, and the vehicle is going to DEcelerate as gravity and friction start robbing the vehicle of momentum. If you can't deliver power to the wheels, they're not going to turn. Simple. A large animal, taking tennis court length strides, isn't going to have a hard time catching up to a vehicle that isn't accelerating, and is actually slowing down, especially considering its stated, in the movie, top speed of 32 MPH. (Actual scientific estimates aside, assuming Jurassic Park's Rex can move that fast, it's going to overtake the jeep eventually if they're not accelerating.) After Rexie blows through the downed tree, you can actually hear the engine straining, since it's still getting gas and accelerating, but that power is going nowhere. Moments later the camera shows Muldoon slamming it into 4th, at which point they speed away.
So, what it boils down to, is if you ignore the metadata of real world estimates of Tyrannosaurus Rex's speed, and say for the sake of argument that animal was capable of moving 32 MPH in pursuit of prey, and take into account the low power that a Jeep YJ had, and how it was being employed during this scene, it becomes downright possible that the movie Rex was capable of keeping up with the Jeep for the short sprint in did. The whole chase scene from start to the Rex falling back was only 33 seconds. 16 seconds of that was spent with the Jeep in nuetral.
Assume for a minute that the Jeep had been in 2nd gear when it was knocked out of gear, and even a real world Rex would have been able to keep up with that Jeep. Not everyone has experience behind the wheel of a Jeep, so not everyone has that context necessarily... but I don't feel like it was implausible taken in the context of the movie.
It's just a movie.
"Clever girl..."
*Deep in the jungle, a shot of a single turkey running over to her 2 buddy turkeys and stealing a worm from them.*
What t-Rex didn’t realize was the descendants of the shrews he was stepping on were gonna be eating his own descendants.
More than that. We breed them to be the most numerous bird on Earth by about 75% them to 25% all others just so we can eat them. But you know, Popeye's is the shit.
@@briancox2721 I don't think you're that Brian Cox but I'm going to pretend that he said "Popeye's is the shit".
Ah but evolution doesn't stop. Wait a few million years and the massive, carnivorous descendants of modern day chickens will be watching 3d movies about scary things called people, who caught and ate chickens. And while watching this movie, they will be snacking on our own, mouse-size descendants. Of course, if we keep messing around with gene manipulation, we won't have to wait that long. So if one day, a rather large chicken looks at you in a funny way, don't move!! 🐁🐔
Revenge is a dish best served cold.
Well, as if they could've predicted that enormous size that requires you to consume tons of meat everyday lest you starve to death doesn't lend itself well to a nuclear winter that inevitably follows a massive space rock crashing into Earth. And that resulting gaps in ecosystem will be very quickly filled by those who remained. And that birds will be so damn reluctant to give their ability to fly just to get bigger.
I’ve legit not believed this ever since I was 5. No way.
I like your yt name 😂 I can't stop grinning at it
Same here but I still hate CoD campers.
i kinda bought it to an extent because, during that scene. it was A: dark and B: raining, conditions which would have made seeing and smelling things more difficult. so if we assume that the t-rex was not a nocturnal species with good dark vision as well, it may well have struggled to sense it's prey in that scenario.
I have another interesting fact about the first Jurassic Park movie.
The spitting dinosaur with the frill that killed the dude in the rain was supposed to be a Dilophosaurus. In real life, Dilophosaurus was much bigger, and didn't have a frill or spitting mechanism. But it was definitely a predator, and I would argue that if they had used the real thing instead of what went into the movie, it would have been just as intense, if not more so.
In an environment where rocks and trees exist only being able to see things that move would be quite a design flaw, no?
I think the implication was that the T rex can see everything, but was basically too stupid to distinguish motionless objects. moves= food. A person standing still could just as well be a three or a rock.
@@BamBamGT1 Yeah, I thought that too. Just the "professor" said "can't see you" in the movie. I remember the very first thing I thought when I saw it the first time was "Well, he can still smell you and if you don't shut the fuck up, hear you." :p
Raptor birds... amazing eyesight... and all related to dinos..
It was simply a silly line in a scientifically ridiculous film..
Fun movie, but not science
..
@@BamBamGT1 That's still wrong.
There are frogs that only see movement and live in dense environments. They still see inanimate objects, but they only recognize movement for food or predator.
Can Big Bird see you if you don’t move?
Yes, but Kermit the Frog can’t
No, he can't see snuffleupogous.
No, but he can smell your sins, and he will suck out your soul through your eyes, turning you into one of his zombie slaves for all eternity.
Famous last words: "It can't see you if you don't move...".
As the people that said that run away leaving their decoy...
I wonder if me covering my eyes would also work...finally my days of covering my eyes and proving to be invisible will prove useful! People laughed, but they didn't know the truth!
Yet that does not mean there is no value in remaining still. Legend has it Doc Holliday stood in one place during the famous Shootout at the OK Corral. It would make sense: it allowed him to take aim quickly and accurately and it makes him appear less important than the figures dashing around.
It's funny because in the second book, that actually happens because he took Dr. Grants report on what happened as the truth for all rexes, even though in the first book Grant explains that it was because of the frog DNA
Thank You! Fantastically done as usual.
All the best to you and yours!
If I remember the scene where the T-Rex chased the Jeep, they weren't on a hard paved road, which can easily make 30mph very fast for the conditions. Sure, that Jeep could easily hit 90mph on a highway, but it's not going anywhere if a ball joint in the front suspension breaks from hitting something on the rough dirt road at too high a speed.
It won't matter if it can see you or not as long as you simply Naurto run away from it
Just Some Bigfoot With Internet Access the Naruto run is getting referenced everywhere now.
*Nezuko run
Suvi-Tuuli Allan A man of culture I see
Just Some Bigfoot With Internet Access Is this why humans have never caught a Bigfoot: because your kind always Naruto runs away when discovered?
instead you could Chuck Norris run from it. And we all know Chuck won't run and the T-rex will be eating its teeth
I love all ur vids. We know this movie is full of errors about dinosaurs. U could have done a whole video of just there Jurassic Errors.
1:53 Hey! My name is Garfield...Simon said my name lol (silly moment I know, but it’s the little things in life). Okay....back to the clip
If there was someone named Garfield in my hood I'd make sure I was friends with him... yes, back to the video now. See you around Garfield ✌
Yep yep. Even at 13 years old, I was absolutely sure that was Deinonychus. I literally just thought 'velociraptor' was the nickname for so many years. I was a huge dino-nerd back then. And well, I assume I still am a tad bit. Found out about the velociraptor's proportions and the fact that it's a completely different species, some years ago. But people STILL think the Jurassic Park model is a veloci. This is one of the reasons I love this channel. Nicely done 👍
Okay, most of this information was settled and discovered, well after Jurassic Park was released. You can cut them a break.
4:59 "They're putting chemicals in the water that turn the frigging frogs gay!"
Darrin Scott Not me bcuz I drink the Alex Jones Chocolate Meal Replacement Shakes... they have ground up bone marrow in them. Which means I'm not gay. I'm also not a frog... but I am really high. I feel like getting a Big Mac and putting it on top of a Chipotle Burrito Bowl. So.... do u know where my keys are?
I don't know if I should add an _Internet Comment Etiquette_ comment here or not. Erik would approve, but Simon may not. 🤔💭
@darrin scott
You sir are a bigot. Didn't your mother teach you that frogs should be as happy as they want. Next you will be accusing Kermit of beastuality.
Timothy Neiswander Do NOT be sucked in by the guise of Kermit's Pseudo Liberal front. Kermit is a self-identified Green-Supremist with ties to several Communist Party affiliated groups.
@@LisaBowers be a good student and do your teacher proud
"One of the T-Rex's closest living relatives is the chicken."
Oh, how the mighty have fallen...
Actually when Dynonicus(?) was initially found it was called a Velociraptor as that is a genus. This was when the book was written so it used that information. It would later be moved out of that genus but the movie kept the name for reason Simon stated, "it was more dramatic."
There's plenty of people out there driving who can't see you if you aren't moving....
There's plenty of people out there driving who don't seem to be able to see, period.
Maybe, but they have to pass an eye test with license or renewal. And we were talking about why T Rex might not see you if you stay still.
Bottom line "Jurassic Park" was a movie made for entertainment and not a documentary made for education. See how easy that was?
But what about the Dilophosaurus? Are you going to tell me it was not small, had no fringe, did not spit venom? How can I go on?
@@flagmichael To be fair, he didn't imply that everything was faked for entertainment.
@@flagmichael Are you kidding? The real Dilophosaurus was much more badass than its movie counterpart.
@@Thagomizer Look up its novel counterpart. Especially when it disembowels Nedry.
@@mcrfan343 The part about venom spitting is still silly, given what we now know about the animal. At the time Crichton wrote the novel, Dilophosaurus was still thought to be a small "Megalosaur" with (comparatively) weak jaws. It was in actuality a large "Coelophysis" with perfectly adequate jaws, and likely an apex predator in its day.
Little note on Jurassic Parks Velociraptors: The velociraptors in the book were actually more true to what we know now as Velociraptor than the ones in the film, being specifically addressed as *mongoliensis* .
The Velociraptors/Deinonychus in the film were called Velociraptor because 1) it sounded more dramatic to english speaking audiences as it was related to some modern day words in the english language (velocity, raptor) and 2) because Deinonychus had for a while been called Velociraptor Antirrhopus, meaning they were free to keep the Raptor name but use its more ripped, american relative.
My father-in-law (may he rest in peace), bought our then toddler daughter something called a Veloci-crapper. Yes, this small stuffed animal had "poo" coming out if its bum. Its tag even had a poem referencing "laying some fresh pipe". Needless to say, my daughter adored this stuffed animal & slept with it until she was older. She is now soon to be 18 & still remembers the quirky gift her PopPop gave her so long ago.
So, we're eating a mini T-Rex for Sunday Dinner.
Survival of the fittest!
The meteor might have thrown the game of life out of balance for a bit
I personally prefer the realistic feather dinos.
Same
If you'd said dinos had feathers back in the 1980s everyone would have spat their drinks out laughing though.
One terrible fallacy people often fall into is criticizing the past for not being as modern as the present. If for example Jurassic Park the book or film were never made because being 100% accurate would be a pain in the ass and boring to an audience, there would invariably be less interest in the subject and fewer advances in understanding today. It is precisely our curiosity, our desire to share our guesses, and accept being wrong in the temporary that ever enables progress.
When the film was made the idea that dinosaurs were related to birds seemed wild to most. It was not commonly accepted or understood. The movie plowed that forward. Yet people then turn back and bitch there weren't enough feathers on the dinosaurs in the film. And complaining about taxonomy? Scientists switch around taxonomic designations all the damn time today regarding extant species. We have DNA and all our knowledge with us, and shit is STILL getting shuffled around.
And if we want to get into the weeds about whether a specific frog has good eyesight, that's not how DNA works. Taking various batches of genes from one species and managing to patch them into another doesn't necessarily mean those genes will express in the same way. Sometimes it works, and it blows people's minds. But odds are more likely slapping some frog DNA into a dino genome may produce innocuous or even negative results. It's as possible putting frog DNA into a T-Rex would blind the T-Rex as give it good vision. But Grant obviously wasn't referring to whatever phenotypic expression he saw before him, it was simply a mistake made by the filmmakers that conveniently amps up drama.
Well, as mentioned with rexes changing with size, the adults didn't need to run fast. Main idea to back this is that the smaller juveniles, which were faster than the adults, would run pray to the parents who were lying in ambush with those massive steel trap jaws. Also, rexes where tough as hell. Like they'd shrug off injuries that'd kill other animals. And they also may have been fairly smart. Maybe not troodon smart, but still enough to be a bit more terrifying.
If Jurassic Park was real there'd be animal activists trying break to in to "rescue" the dinosaurs. The outcome would be entirely acceptable.
Noisydad those activists would then get attacked
When the book was researched in the 1980s, it was believed the t-rex had movement based eye sight
if the t-rex itself is moving would that not create the movement to have normal eye sight tho?
No, it was explained clearly in the book, and not in the movie, that the T. rex's vision was because of amphibian DNA used to fill in the gaps in its genes. It's just that people forget this because they really don't mention it in the movie.
Riceball01 They do mention it in the movie too. But, only one time. Whereas the book actually went in depth about the subject, and explored it.
@@Riceball01 Yeah, but on what paleontologists say, dinosaurs arent amphibians at all, theyre half reptiles half birds but of course, many theropod species like Trex were more related to birds
@@amn2760 The amphibian but was from the novel & to a lesser degree movies. Also, dinosaurs are not considered half reptile & half birds, they're a kind of reptile & birds are now considered dinosaurs & thus reptiles.
I mean at the time criton wrote jurassic park, dinonachus did have the technical classification of velociraptor. And he truncated the former off to make it sound better. It's only now in the future that velociraptor has been removed entirely from dinonachus that it makes no sense.
On the last note about the Velociraptor-Deinonychus misnomer, it wasn't actually about the genus "Velociraptor" sounding more dramatic.
In 1993, and a few years before when the book was being written, deinonychus antirrophus was being debated on whether it shouldve been considered a subspecies of velociraptor, named velociraptor antirrophus. The general scientific consensus at the time was that it was likely they were just different subspecies of the same animal, and thats why we got "velociraptors" in jurassic Park.
I feel like the Starlord part was an inside reference to the TIFO podcast episode when Simon went "What is Thanos?"
It crossed my mind when I wrote it that, much like Captain America when he first got unfroze, Simon might not get that reference. ;-) -Daven
@@TodayIFoundOut feel free to slip in references in future videos! I liked your appearance in the eye on the dollar bill video, it was priceless 😂
One view, I've never been this early.
You forgot to say "First" lol O:)
Earlier in the movie, he tells the kid that Raptors can see movement, unlike a T-Rex. So he probably didn't consider that the T-Rex might be more frog than Dinosaur.
1. The question about whether or not Velociraptor hunted in groups is a bit of a grey area. There have been recent finds suggesting that at least a few species related to this animal may have moved in small packs based on footprints and a few specimens of a species found in one place (such as with Deinonychus itself).
2. Dinosaur intelligence is a touchy subject. If we're talking about something like brain-to-body size, then while Velociraptor and its kin were considerably geniuses compared to other non-avian dinosaurs, keep in mind that is still lower up to totem poll compared to an ostrich, let alone crows and parrots. However, to believe that this would've made them "dumber" than a ratite may be stretch things considering we're talking about a successful predator with more weapons on it than Machete. When it comes to carnivorous animals, they tend to have at least some semblance of wit, especially when it comes to hunting prey.
3. Deinonychus was actually about three feet tall; no bigger than a modern wolf. It turns out that there were a few species of dromaeosaur that did reach the sizes crafted in the film with Utahraptor (the largest species to date) actually being described soon after the first Jurassic Park film was released.
4. Fun fact: there are at least two species of Velociraptor described, though likely a third species has yet to be assigned. V. mongoliensis is the more famous of the two, hailing from the Flaming Cliffs in Mongolia's Djadochta Formation, and V. osmolskae from China's Bayan Mandahu. It turns out that while the two sites were likely formed at the same time, word is that the animals from the latter deposit might possibly be the descendants of the Djadochta fauna.
"More weapons on it than Machete"
That was what I was wondering. We are talking mostly Apex predators in this video which generally have some fair level of intelligence. You kind of have to with dynamic senses and possible pack hunting.
Can Simon see me if I don't comment?
Yeah, but there's still the problem of the JP people breeding dinos for YEARS and not a word leaking out!
And also the super realistic fact that they used _wire_ fences, trusting *only* in electricity, to hold back T-Rexes.
Nedry had already leaked the information before the start of the movie.
Awesome detailed research
I reaely enjoyed that
This channel is so diverse in its subject matter. I'm never bored with the variety!
This movie came out in the early 90s. The science is based on what they knew then.
Why cant you smile in your passport photo?
They know they will be looking at it when you just got off an aircraft. I am almost surprised they don't require someone hit you on the kneecap with a hammer while they snap the picture. That is more like what I look like after a flight.
I think a simple way to put this is, any perspective in which you have line pf sight with the T.rex's pupils is in eyes degree of motion and field of view. I think this is why they have always been so scary in pop culture, and recreations; they always feel like they can see you. I think that an interesting theory is that this is actually part of the reason for the stigma that if you don't move, they can't see you... Maybe trying to make them less op... 😅
I knew all of this already due to other shows I follow, but I still enjoyed watching Simon present it.
I'm not convinced avian dinosaurs were as dumb as this video makes out. Corvids, especially ravens and crows, certainly challenge primates and cetaceans in terms of intelligence. Ravens, in some areas, even challenge humans in their speed of problem-solving.
"Ravens, in some areas, even challenge humans in their speed of problem-solving."
You could have left out "in some areas" and no one here would have argued with you. LOL
someone who doesn't/didn't know who Thanos is doesn't get to make Starlord references, lol ... jk ;p
It still blows my mind that even without watching the movies Simon didn't know who Thanos was. :-) -Daven
@@TodayIFoundOut Does any animal have movement based eyesight and if not then why do people believe so.
I learn so much from this channel. 👍
I always thought that what he really meant was that like a bear, a T-Rex won't attack prey that isn't moving and he used that explanation as it was much quicker and comforting than saying a T-Rex would only attack if you move.
Best land predator to ever live probably had the best eyesight of any other land animal.
The “don’t move” is because of frog dna
Khanh Nguyen nice job restating what was in the video.
We covered that part and why it wouldn't actually matter. Pay attention! ;-) -Daven
Today I Found Out Sorry about that. I comment that before I got to that part
Except grant was talking about their vision before he ever heard of Jurassic park
@@drewpamon yeah the movie REALLY screwed up with that plot point. The novel makes it clear that it's due to the DNA manipulation, Grant is astonished when he freezes (I believe it was out of fear, but not positive) and the T-Rex can't see him, and then another dinosaur (a hadrasaur I think?) demonstrates the same vision issues when he and the kids wake up in the tree.
Already saw mentioned below, the point of the book was that the T rex had frog DNA. The realistic assessment is that predators will normally hesitate or back off if you stand your ground, simply because it's not the way natural prey act.
Soooooo a Trex would taste like chicken if cooked?
probably closer to gator meat, maybe turkey
Considering the enormous size difference between the two, probably not. T-Rex meat is bound to have been a lot redder.
How would Simon know if it was true😂😂 alot of assumptions and guesses
Simon time travels
this is of great help
now I know what to do when I face them
thank you man
Dr. Grant:
Don't move!
It can't see you; if
you don't move!
Anon:
It can still smell &
hear you... right!?
Guy in the Outhouse:
Oh... sh...
>deinonychus
>6 feet tall
I practically did a spit take. They were about 3 feet tall at the hip (and like nearly all theropods had a horizontal posture), don’t make shit up. There were 6 foot tall dromaeosaurids like Utahraptor, but none of them had been discovered by the time the film came out.
I just looked up a size chart and deinonychus came up to the human hips
Kevin Benoit
Which is, what? 3, 3.5 feet on average?
daily reminder that plastic dinosaurs are made of oil, and those, made of dinosaurs.
Love love this channel!!!!
in the bonus facts you missed a key thing i love most about the raptors. i dont remember the quote perfectly, and oddly i cant find it on google
Micheal, after the Discovery of the Utah Raptor said "wow. i dreamed it up and they actually found it!"
First
Yaya
i did this 5 Seconds after upload nailed it
I like how Jurassic World tried to explain away the gross inaccuracies by saying that they just genetically engineered caricatures of the dinosaurs
1:31 Don't forget the intercostal clavicle.
I FINALLY GET THAT MEME WITH THE ELDERLY CHICKEN WEARING AN AFRICAN HAT SYMBOLISING WOKENESS WITH A CAPTION "WE WAS DINASAURS" 😭
I reccomend you do the sponsers further into the video, hearing them so frequently at the beginning of shorter videos gets wuite exhausting and ive seen others say the same thing throughout your comments so i think im not the only one, love your videos though i feel smarter everytime i watch
THANK YOU.
For decades I've pondered why they'd call it a velociraptor in the book/movie when a) that's not what velociraptors looked like; and b) there was already a dinosaur who looked like that. Because it sounded "more dramatic" finally puts that question to bed.
Interestingly, Dakotaraptor (discovered in 2005, described in 2010, and named in 2015) was another large Dromaeosaur from North America. It was a similar size to Utahraptor, albeit slightly smaller, and lived in the Hell Creek formation in what is now Montana, the Dakotas, parts of Wyoming during the late Cretaceous. This is the same area and time period that both Tyrannosaurus and Triceratops are found suggesting it is very likely that all three animals lived alongside each other. This lines up well with the fossils shown in the the books and movies. The JP raptors are of similar size (to both Dakota and Utahraptor) but they are found in Montana where Hell Creek fossil beds can be accessed.
Utahraptors were twice the size of Deinonychus. Velociraptors, Utahraptors, and Deinonychus are all in the same subfamily. They are just different Genus. They are very closely related.
Even as a child, I was like, "Wait, wouldn't they be constantly tripping over boulders and stuff?"
I do think it is worth noting that, as is somewhat alluded to in the video, that significant research into dino optics came after and it was only just being realized (for the most part) that dinos were more bird than reptile. So, basing what they could or could not see on very primitive lizard eyes was not unreasonable.
Well, to be fair, I don't think anyone thought all stationary objects were invisible to the T-Rex, but rather it would only be interested in things moving relative to the background.
Here's a bonus fact for you Simon
At 1.6 km of clarity for humans is the main reason in the worm formula we have to adjust with a multiplier when doing range estimation for long range shooting and artillery
That makes a lot more sense when the Kid in the movie said it looked like an Over grown turkey. It was a Easter egg to what the real Velocitor raptors looked like. Also in the T-rex chase scene you need to remember Jeff Goldbloms character hit the stick shift and down shifted which slowed the Jeep also the jeeps only had 4cyl engine and were not the fasted things on the road from 0-60 mph with a top speed of around 90mph.
Deinonychus at one point in time was called velociraptor. The Velociraptor that you are trying to depict is velociraptor mongolius. You're absolutely correct in that this one was the size of a turkey
I always figured the "vision is based on movement" was an over exaggeration of the idea that the dinosaurs eye/retina was mostly rods and not cones, giving it great sensitivity to small changes in light or movement.
T-Rex lore in Jurassic Park is fascinating. "It's not really a predator but a scavenger. A scavenger that can't see things that don't move."
It's a horror movie trope. Like the Hunter-Seeker in Dune, you have to hold perfectly still when the fight-or-flight response kicks in.
Contrary to popular belief, the reason a t-rex can't clap its hands is not because its arms are too short but because it's extinct.
The idea the T rex couldn't see you if you stayed still is based on the notion that T rex could not see with its mouth.
Love the show and usually appreciate the bonus facts. However might need to research on that a little more. The 1988 book Predatory Dinosaursof the World by Gregory Paul which placed Deinonychus under the name Velociraptor as well. Hence referring to the much larger Deinonychus as Velociraptor. This is further verified from Making of features in Jurassic Park III where they state something about recent good skulls of velociraptor as part of their inspiration. At that time there were lots of good velo skulls but only recently Deinonychus ones.
Tldr: velociraptor used to include Deinonychus during the time Crichton wrote the novel.
Yeah, what was probably the most fearsome predator to ever walk the earth would undoubtedly have sharp vision.