Did you know that the letter keys on a keyboard are actually not layed out in the most efficient way for people to type fast with ?
Back in the era of original manual typewriters, an algorythm determined which is the best layout order for the letter keys to be in, however, the metal arms of the keys would get stuck if you typed too fast.
As a result, the letter keys were spaced out so much that no matter how quickly one typed, the metal arms of the letter keys would never get stuck.
Even with the advent of technology, so many had already mastered the order worldwide so that changing it now to it's optimal order could never happen.