Why is the keyboard arrangement ”QWERTY”? No one has improved it for a whole hundred years?

On anti-human design the keyboard is definitely on the list. Although we are familiar with using keyboards nowadays the arrangement of keys on the keyboard is actually not in line with writing habits. Why is the arrangement of the keyboard so strange? Why has no one optimized the unreasonable design of the keyboard for so many years? Today let's take a look at the story behind the keyboard.