This Video Will Hurt
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- čas přidán 22. 12. 2013
- Support the videos: / cgpgrey
Special Thanks to:
/ totalphilosophy
Saylor Fielder
Julian Yap
Ardalan Moazeni
Dr Clifton K. Meader goo.gl/DpsuGk
Dr Fabrizio Benedetti
Max Ramsay - @maxafax, The Soden Family, Conan Kudo (ニール・ゴンパ), Kira Lanier, Lisa Marie Terry, Dave Roberts (the Best Dad ever), mikey.reiach.net, Carine Frsch, Mauceri76, David Benko, Team Fluger, A.Manning, Smuffie00, Robert English, @jwvdiermen, Laura Saura Maura Watiker, Nicholas Hartikainen, M Go Blue!, @chrisaiello, @Bad1z, Kuffer Sam
Selected sources:
bjp.rcpsych.org/content/180/4/...
211.144.68.84:9998/91keshi/Public/File/39/16-11/pdf/nm.2229.pdf
www.bmj.com/content/332/7546/8...
www.ncbi.nlm.nih.gov/pubmed/22...
www.researchgate.net/publicati...
www.sciencedirect.com/science/...
jama.jamanetwork.com/data/Jour...
ses.library.usyd.edu.au/handle...
www.bmj.com/content/339/bmj.b5613
www.ncbi.nlm.nih.gov/m/pubmed/...
www.nejm.org/doi/full/10.1056/... - Věda a technologie
"This video will hurt"
Gets a double 30 second unskippable ad.
I got what I came for I guess
😂
I'm okay with ads
I'm okay with buffering
But when ads buffer, then I have a problem
@@aimanputra3058 Its
I don't mind ads
I don't mind buffer
But when ads buffer I suffer
i had no ads
What i can hear it
"This vid will hurt"
RECOMENDED FOR YOU
Yeah
@Elias Westlund yeah the same vibes
Yt we need to talk
Thanks CZcams.
Same
"Some of you will start to have a headache. Why? The Nocebo effect."
No, Grey, it's cause I'm sleep deprived as hell
Watching this half asleep too
Watching this at 6:04 am and haven't yet slept.
@@gamingwithbella6615 i can tell from your grammar
Man you spoilt it for me ):
@Eoghan Sweeney back at 666
Bonus: CGP really did put in sub-frequency headache sound just to toy with us.
I really want to put this through audio processing software because I could swear I heard a high sine wave (16-18 khz at a guess) at the beginning, and I wanna know if that was actually there or if my brain was filling in the gaps because I know about that stuff...
@@LaughingMan171 He played a small snippet of hearable high frequency sound, and then stopped it so yes there is a little bit of something
@@LaughingMan171 that's just your tinnitus
Yeah, I heard that.
@@Ardeact I turned down þe volume so I was able to hear it, but I did it before it can get louder, hoping I can prevent þe ear piercing noise.
IT TOOK ME 27 MINUTES TO FIND MY DAMN HEADPHONES AND IT WAS BULLSHIT?!
***** Why'd you need to edit such a simple comment lol.
***** lmao
lmao
Lmao
Lol
“It’s so high pitched you can’t hear it”
Me: *proceeds to hear the loud high pitched sound*
Same
Yeah it would’ve been better for the purpose of the video if he didn’t actually put the sound at the start
He says that the one you hear is an example "Those sounds are too high pitched to hear, like the one playing in the video right now (that you CAN hear)". Poorly worded, but he never said you shouldn't hear anything
@@EddSjo the syntax of that sentence just flat-out implies you can't hear the one in the video. Even if he meant you CAN hear the one in the video, it's incorrect.
lmfao wtf i didnt hear that at all xd
I was just thinking - this helps explain why ancient societies believed so much in things like voodoo, magic, or medical treatments that we know from modern experiments are barely effective. As long as they believed it was going to work, it sometimes would, which then proved to others in their society that it did work. This is a kind of self-reinforcing cycle for belief in things that aren't actually very effective.
Same with prayer
yup. superstitions exist, because the symptoms are real.
Religion in a nutshell
fun fact my mom convinced me I could hear electricity because she could (long story shot, it involved her realizing she had lifelong tinnitus and just only noticed it indoors where its quiet) and then I had psychogenic tinnitus whenever the lights were on for like a year
I got no headache as my first thought was "my headphones aren't capable of producing a pitch that high"
low-tech saving you, one nocebo at a time!
lol
Similar, as recently I watched a video on sound testing for age. In the video, a scale was played with higher and higher notes. My garbage laptop speakers can only produce half the scale, despite the fact that my ears are perfectly healthy.
Also youtube compresses the audio, so nothing above about 16kHz (ish, don't remember the actual number) is actually played when you play a video. You can try this yourself at one of those "Check your hearing range" videos
My right ear was a little bit agitated. But my left ear was fine because only half of my headphone works. ( It's broken.)
I was expecting insults that will hurt me emotionally
You can get that at school
@@galaxywolf8444 boiii
Same lol
your pfp and user remind me of someone
Same
CGP: "you cant hear the sound thats playing right now"
me: **hears it** "uh huh...am i not supposed to hear the beep?"
same
red fish
same here
"Can you feel the pain?"
Me, who read the comments: YOU HAVE NO POWER HERE.
"Something uninformative"
*History Channel logo*
"OHHHHHHHHHHHHHHH!"
I came to the comment section specifically for this comment right here!
oh snAYUP
but why?
The same goes for TLC, "The Learning Channel"
It was a good roast
I feel irrationally satisfied with myself for not getting a headache during the video intro.
me to
me too
Never believe an animated man with glasses. And how did- oh right the video explained it...
Same here
that may also imply that medical placebo's have less effect on u since 80% of medicine is a placebo
dont worry i have the same problem
4:08 This actually happened to me once. I was at school and a couple kids threw up. I felt sick too and went to the nurse. She looked me over and had me rest for a few minutes. After she told me I was fine, I felt fine.
This probably plays a part in why being confident and believing in yourself may help.
plot twist: He was actually playing the sound
I did hear a high Tone, as he told that.
I did too
@@Persicaria1991
And i watched it multiple times to make Sure, there really is a Sound.
@@eisflamme2438 Yeah
There's a sound. It starts at 0:10 and fades out until 0:18
Joke's on you, I already had a headache before...
Damn, i saw this comment after I said the same
Christopher Savignon Same
I always have a headache so this didn't affect me at all
me too
Christopher Savignon saaaaammmmmmeeeeee
*me who already has a headache*: I am four parallel universes ahead of you.
I've seen this video about 10 times and I've watched the entire intro every time, and it still hurts every time
the worst thing about this is that i'm still having a headache 5 minutes after you told nothing was really going on
Brain damage.
For the future:
Headaches/stomachaches caused by Encebo effect can be cured quickly with a glass of water or tea with sugar and a small drop of salt.
@@michasokoowski6651 i see...
@@michasokoowski6651 this is a placebo isn’t it
@@phishb8 Quiet, don't tell them that.
And well... placebo is the best cure for the encebo...
Well that’s just great. Now that I know this, I will never believe any doctor that says “ this won’t hurt” and I will feel all the pain
The strangest thing about placebo/nocebo effects is that they can work even if the subject knows it's placebo/nocebo. Not everytime, but they can work.
@@Affews100 you are just trying to convince us with another placebo, admit it /jk
@@tarquinioprisco8459 ARGHHHHHG
r/angryupvote
@@tarquinioprisco8459 ngl the amount of reverse psychology in placebo and nocebo is greater than any psychological drama
@@tarquinioprisco8459 This is probably my 9th time watching this. I still feel a little light headed after the beginning every time. What ZerdLR said is real.
I heard it for a second, idk if that was intentional but it happened, during the intro
The last part of the video was damn important. Despite all this, always take a person suffering from any medical problems seriously. I'm really glad you added that point! A very well made video :D!!
*"These sounds are too high-pitched to hear-*
Me, hearing it
There's definitrly a high pitch sound in this video, I have no idea why he put it that in, that's just mean, it's at the begining
@@zeldamaniac3188 in the editing clip portion of the video it explicitly states he added that sound as a red herring to get you to believe the high pitched sound is real.
I actualy belived the stickman on the internet
Same, I bet it was to build credibility
... also my ear did hurt for a sec... I'm the drama lama
"The sounds are too high-pitched to hear, like the one added to this video playing right now."
*immediately plays an audible high-pitched sound*
Thank god I was not imagining that.
I heard that too
He was trying to add to the effect, along with red in the screen and the ominous music playing.
I thought i was crazy
yeah i have noise hypersensitivity and that legitimately hurt
I feel like you could have explained this to Chuck, Saul Goodman‘s brother… And he would’ve taken your word for it given your scientific background and clear explanation.
I was like: Is there something wrong with me? I cant hear or feel anything different.
And then it hit
Video title: This video will hurt
6.7 million people: Oh boy, I'm going to watch this!
How is there 1 reply
How is there only 2 replies?
Fuck up, bitch.
Comment:
Video title: This video will hurt.
6.7 milion people: Oh boy, I'm going to wach this!
585 people: Oh boy, I'm going to like this!
How are there only 7 replies
i actually experienced this once, i faked being sick to skip school, and suddenly i got a fever and a bad cough. I literally thought i had super powers when i was a kid
I actually purposefully made my self sick like this and my parents would always like tell people that I’m such a honest kid and now they still believe whatever I say. Ik ik I’m just basically a genius 🧠🧠🤓
Xd
@@ryansunil4856 hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
@@ryansunil4856 sussy sussy bake
I mean, you do have superpowers, just shitty inconvenient ones that everyone else has too.
Me, an intellect: knowing that youtube filters all frequencies above 16khz to prevent whatever
Already suspicious because most likely the hypersound would most likely not reach my ear anyway:
It could get filtered out when youtube encoding the video file,
it could be not produced by the audio output of computer,
and the headphones might not be able to make to make this sound.
Unless the hypersound is very close to the limit of hearing.
"These sounds are too high to hear" **hears a high pitch frequency start to play**
*cries in tinnitus*
For some strange reason, I always hear a high-pitched noise when I am near a wireless phone charger. If it's currently charging a phone, then I'm okay, but if it's just the wireless charger I hear a ringing.
@@JohnSmith-ex8iw Same. I can also hear television or TV monitors that are on but not playing anything from a room over.
@@JohnSmith-ex8iw I don't have a wireless charger, but there are some plugs that produce a high-pitched whine.
@@JohnSmith-ex8iw yeah i get what you're saying that sometimes happens to me though usually i have to be really close
How to beat death:
Step 1, just say no.
Death cannot Legally take you then, that’s how that works right?
Isaiah Dobesh yes death needs consent, death is not a child pedophile or something.
What do we say to the God of Death? Not today - That proves it, Sirio never died!
Isaiah Dobesh he does cuz he has jurisdiction
@@blasted4094 since when?
Last I heard he was a dropout, got fired, and is now homeless...
Sorry bud. You gotta check ur fax. After all, death is the cause of 69% of all deaths in asia....
I swear I heard a high pitch sound at first before it faded
I had the volume down and subtitles on... I still got a headache? Come on brain! You can do better!
Shots fired at the History Channel?
Justifiably so. Haha
Perhaps he was using the term "uninformative" strictly within the context of informing people that they should feel sick? ...nah. Shots fired. (~_~)
Echo Trowers he despises the History Channel. He actually addressed them in a video
Which video?
Because aliens!
Someone invent a drug for backwards Nocebo effect:
"You have cancer."
"No, I don't."
"Oh, never mind."
"backwards Nocebo" yea it's called placebo
@@cerno_b yes but how do you confirm its nocebo and not something more serious and if your wrong and they die for not seeking out farther treatment because they thought the homeopathic medison would help them and it will not help them.
@@cerno_b No, because if you are curing, say, cancer, it won't actually cure the cancer, it might help with the symptoms though. It won't heal you, it might make you feel better for a bit. Until you actually die.
@@onyxrafle8066 No, that's just placebo is just reverse fowards nocebo. Stupid.
that would be the cure to all the sickness in the world
Okay, this guy here in the room with me screamed in pain and begged me to turn off the headache noise. He seems to be dead now. I think you killed him! Curse you placebo man!!!
"Wifi or wind farms, or wind farms with wifi!"
Huh, interesting idea.
"Some of you may feel a headache, why?" Yeah, maybe because youtube recommended me this while i am having a headache
True
LemonGamer “your ears start ringing” I have Tinitus so my ears are already ringing coupled with my sinus infection
Lmao same
Same
lmfao same
am I the only one who wants wind farms with WiFi to be a thing?
+
personally i think that would blow........:-P
Imagine if we could plant trees with free WiFi! But sadly, they only produce the oxygen we need to live. :(
Yes, you're the only one.
How about WiFi with wind farms?
I already had a headache and it started to go away when said you were playing the sound, now its back.
"Hypersounds like the one playing right now..."
I COULD HEAR THAT
Dang it. I felt a headache for the first ten seconds, and it went away once he told me he was lying. My body is so gullible.
So I read this before I hit the 10 second mark. I totally spoiled myself like the fool that I am.
Same brother....i didn't feel a headache but a odd sensation traversing through my ears to brain....and just as I thought "here come the headache" he says "it's all false" and just like magic that sensation vanishes.....so gullible indeed
Me too, but in my defense I'm totally baked rn
Good news: that's perfectly normal. The nocebo effect is not some obscure effect that happens to particularly foolish or gullible people, It's a part of human psychology that is deeply embedded in the overwhelming majority of us.
Glad to know I wasn't the only one.
I seriously thought during the intro: "This has to be about the nocebo effect" and still got a headache.
I think it’s placebo which means fake , maybe.
@@moonlet4864 yeah they're related but nocebo is like a version without the non-drug - probably the mechanism is similar for both...
Maybe the real brain thought it was true
Fun fact: placebo and nocebo still works, even if not as well, in most people who know it’s not real.
Hypnotism is an active extension of this effect
me to! and I thought he was going to play the sound he was taking about before he said he was going to play it
i didn’t get a headache but i did get a vague humming noise in my ears as soon as you mentioned the sound lmao
So... listening to this, I think I may have identified a nocebo effect taking place when I was in junior school, at about 9 years old. A bunch of people apparently got scarlet fever and started itching like crazy... about two thirds of the class was in the doctor's surgery on that same day, including myself. And like, it was real itching, real redness, REAL temperatures and sore throats, in many cases. But when I'd been home for like, a day, I was absolutely FINE. Half my class was back at school within a couple days. To this day, I have no idea who, if any of my classmates, actually HAD it. I guess this could be what it was...
"This video will hurt."
Jokes on you, I used the placebo effect to nullify the pain.
Yeah cuz the Placebo is the opposite of the Nocebo...
@@whythehelldoineedahandle Just expect the video to be a fun experiment. Because the nocebo effect requires the expectation of something bad, you just need to expect nothing bad to happen.
Note for any future commenters; this does not mean being careless prevents pain.
got it, being careless prevents pain.
@@rumory 😆
CGP grey: you will get a headache
me: ＊proceeds to get a stomachache ＊
Oof
@@happyfacefries ouch
Ur head is in ur stomach
Initiate confused screaming.
He a little confused but he got the spirit
not even 7 seconds in and im already in unfathomable pain
what do you mean that's not how it's supposed to work
I started panicking in the intro bc I fully thought I was just about to have a headache
Those kids were just trying to get out of school, clearly.
Maybe not. I don't think the hospital is much more fun than school.
Depends. Some anesthetics can be pretty fun.
Like opioids? :D
and nurses can be sexy
+I4Freacking2Love0Coffee very sexy
Could this be why in the olden times people believed in witches curses?
It's why people still believe in witchcraft in Africa and other parts of the world.
meeper30 No, I don't think so.
Could this be why religion exists
Tato Botato mabye
Jokes on you, I could hear the beep. Guess I am a dog.
I had a dehydration headache before this, and the sound cured me
i didnt get a headache but i did feel pressure in my head
Was I the only one who, after about the first 7-8 seconds of the video, realized that it was probably about the placebo/nocebo effect?
I mean, I'm fairly certain that youtube's crappy audio codex probably can't replicate pain-inducing (at least to normal people) sounds.
Nah, i realised it as well.
I've been watching too much Mentalist lately, I suspected a trap.
yas
Same here.
Anyone remember that Spongebob episode called "Mad Snail Disease"? Yeah that's exactly what happened.
+Psycho Zebra The nocebo effect: It can turn you into a snail.
Noah Williams It was a zombie actually.
Psycho Zebra
That too.
+GKH Konrad He's just jealous of my skills!
+Psycho Zebra yep i remember that episode
I didn't feel headache, but I felt a big pressure around my head
I could feel a teeny tiny bit of pressure on my ear
I wonder how many times I’ve been completely fooled by this affect throughout my life
Effect
@@clown-eating-hippo Affect
@@aaa-dj9bx Incorrect. Affect as a noun has to do with emotional expression.
@@clown-eating-hippo ok, thanks for the info
Guys Affect is a verb and Effect is a noun
BUT I HEARD RINGING DURING THE BEGINNING, That effect is powerful.
That's because he played an audio track of ringing in the beginning, and even pointed it out in a screenshot soon after.And even if the whole hypersound thing was true, then the ringing should not have been what caused you pain because form what is claimed in both the video and the study YOU LITERALLY CANNOT HEAR HYPERSOUND(WHICH DOES NOT EXIST.)
I heard the ringing too !
stop being such a drama llama
Doc Possum That was a fake and you only felt it because of Nocebo I don’t know if I spelt that right
My ears slightly hurt even before I played the video
I didn't watch with headphones and I muted the audio at one point and I still have a headachish feeling
This channel is goldmine. Why didnt i discover it earlier?
"...watches something uninformative"
*History Channel Logo*
nice
Sometimes when I think the volume is on a video and assume its low, I can 'hear' a video playing very quietly then realize the volume isn't on at all and it's imaginary.
I'll get that too sometimes if I see a video playing out of the corner of my eye but don't know it's muted, my brain will make up what sounds like words that are just too quiet to make out but when I look at the video and concentrate on the sound to hear it it stops.
Bruh I thought this was only me
This happens with music to a lot of people
@@user-pi1du7vu9e you just hear a garble of sounds, like if there was a quiet conversation going on behind a closed door but it's too muffled for you to quite make out what people are saying
I listen to the same soundtrack every night and sometimes get the same effect - I can't tell if the volume got messed up again or if I'm imagining it playing
Even after confirming its not I'll still hear it, too...
I met this channel today and Im totally in love with it
My shoulder hurts for some reason every single time
"Air was toxic"
"Spreading from mind to mind"
Sounds like the radiance to me
UGHHHH... Somebody go get the vessel!
T H E R A D I A N C E(moth music)
Sharpen your nail friend
nocebo effect is just a moth
N O M I N D T O T H I N K
“Wind farms with wifi.”
Thanks for quoting that.
Knightmares the true evil
how could you!... i probably going to have nightmares for days, weeks, MONTHS EVEN!!! (lol jk XD)
That's why I looked in the comments section.
I know right? What kind of farm has WiFi
When I have a headache I wait for it to pass me by myself...
(and unfortunately I immediately understood that there was actually no sound, even if I saw the video from the phone)
I didn't get a headache, but I DID think I could HEAR hypersounds
I tried to tell my friends the flu was going around and a week later we were sent home so we would not get the flu... oops
Michael Splane well played
Welp. Nocebo worked a little too well.
im going to try that....wait im homeschooled nevermind
Jokes on you, I could hear the beep. Guess I am a dog.
Jokes on you, I did hear a beep, but it apparently wasn't the video, and it did hurt..
This video cured my blindness. Turns out it was just a nocebo.
*Acchually* dont wanna sound annoying but that would be a placebo as it is a positive effect.
and now i feel really annoying
*actually
you been fooled again
its not nocebo but locebo
you been fooled again its called placebo
I think he was saying his blindness was a nocebo, not it being cured, so it is negative
This Video Didn't Hurt Me.
I had outsmart you, i'v started to watch the video already with headache
That's just... that's just unhealthy.
CGP Grey: “But cause headaches, they still do.”
Me: oof, now I have a headache
CGP Grey: “Because you shouldn’t, this study is made up.”
Me: then how... *collapses from dehydration*
oof
oof
off
@Asher Ezard nocebo*, did you even watch the video?
@@ohok5608 i bet your mother
is a loving and caring person
Me: *gets stabbed by someone*
Me: I'm fine, I don't believe in pain.
That's why i use the dead ringer
@@some1619 ah i see a fellow tf2 player
@@radenrangga902 ah yes i see your a man of culture as well
This can work, actually. With a lot of training, you can make yourself believe you are totally fine and pain doesn't exist.
@@Olivia-W you can say that but I doubt that would work against a 75mm anti tank cannon
I am rewatching this, and still got a small headache
I predicted that the intro would be a demonstration of this effect with no real sound and I still got a headache. The nocebo effect is powerful
Me: "Gets shot in the arm"
Me: NOPE, A STICKMAN ON THE INTERNET TOLD ME PAIN ISN'T REAL
ITS A SIDE EFFECT FROM THE VACCINES TO POISON CHILDREN WITH PAIN FOR CONTROL AND OVERPOPULATION SOLVING IT'S A PROPAGANDA SPREAD BY THE GOVERMENT
Martyna Petrauskiene wtf
@@gabijota11 pain existed before vaccines so thats a bullshit argument
@tu tu it clearly isnt
@@gabijota11 I feel so bad for your children.
I had a headache already, joke's on you
Same
Same
Same
I have a migraine and I have for 3 days
+Alexandra “Boolybong” Wilson-Newman migraine is 2 days max
i didnt get a headache but i did fall asleep
no seriously
The high pitch sounds in the beginning gave me earache not a headache
*Jokes on you! I have tinnitus so I’m used to high pitch ringing*
Edit: So he lied to me about the hyperpitch, but my ears are still ringing so...
there was an annoyingly high pitched sound similar to the one emited by phones running fake mosquito repellent apps triggered my tinnitus too :|
Aaron Long W-WHAT
OMG LMAO LOL 😂 🤣😂🤣🤣😂🤣🤣😂🤣🤣🤣🤣🤣😂😂😂😂😂🤣🤣🤣😂😂😂😂🤣🤣🤣🤣😂😂😂😂😂😂🤣🤣🤣🤣🤣😂😂😂😂😂🤣🤣🤣😂😂😂😂😂☺️🤣🤣🤣🤣😂🤣🤣 HAHAHAHA SO FUNNY
I have very minor tinnitus
Bro same my ears a ringing
OH GOD NOT WIND FARMS WITH WIFI !!!!!
lord halp us......
Jokes on you, I could hear the beep. Guess I am a dog.
Jokes on you, I did hear a beep, but it apparently wasn't the video, and it did hurt..
But what about the Wi-Fi with wind farms
Jack Brown just a massive fuckin wind mill in the corner of your living room 😂
"This sound is too high to hear" I can still hear it, barely
My head hurt, even though im rewatching this Video and therefore knew the hypersound wasnt real
I told my friend that the asthma attack he was having was just a nocebo. He's not moving anymore. Help?
Hes just ignorant, and doesn't want to believe you. You should probably consider getting friends with an IQ of at least 125. Good thing he will keep pretending to be dead, since now the strong will survive and the weak die off. Evolution in its purest form!
Cuby ah yes if your friend is dying on the floor come to the CZcams comment section
@@getoutofmyfishtank4558 just a nocebo, nothing too serious
@@getoutofmyfishtank4558 r/wooooooosh
Tawhid Choudhury ditto
I actually paused the video and got up to get my headphones. I will not forgive this man for getting me out of bed.
Damn, that hyper sound really got me.
My head hurt before I clicked play... I just got done watching his "You are Two" video
How every ancient curse used to work on the uneducated people
And ancient "cure:, too. How would cutting me open and draining a pint or two...or three.....or......that's a lot of blood.......i feel woozy.............*faints*
Nah they wouldn't work still. People were just sacred because of superstitions
Sh4dy D4v3 not every, a lot of others were probably cause by natural processes. Like women in Salem being thought of witches for jumping off of buildings with brooms because of a natural chemical found in buildings with get thrown into the air when sweeping.
Kind off.
4:57 "...While another group watches something... uninformative"
Picture of the History Channel.
My favorite part of the video. Because it is true.
No wonder it showed a mini series of the Bible
3594910025R It showed a series about FUCKING ALIENS!
I'm not saying it was retarded, but it was retarded!
YOU CAN IMAGINE IT LIKE AN ALLERGY BUT FROM MIND AND NOT NOSE
Chuck be like: 4:23
thats exactly what i was thinking.
Oh my god. Electrosensitivity is a memetic hazard. Time to call [REDACTED]
We need 999 to calm down the children.
Hehehe SCP jokes are big funny
Pain is just an infohazard
Image if the sound was a memetic kill agent
i was literally repeating “this is a placebo” and it still hurt because i don’t trust my judgement...
Could have been stress maybe
it's a nocebo a placebo is when it has not bad effects but nocebo is negative effect
When they brought up the sound i heard a high pitch for about 3 seconds and no headache
i absolutely love that the thing on the TV that is 'uninformative' at 4:55 is the History Channel, as a history buff this is very true