Why is the keyboard like this?

Somebody told me once that the keyboard is set out like it is because of the old fashion type writers. People used to have to type fast in offices etc and typing pools so the keys that were used the most were spread out so they wouldn't get stuck together when typing fast. Does that make sense.. not always very good at expalining things, but I do know what I mean! If this is wrong, please correct me

If you look closely, the QWERTY keyboard was designed so that typewriter could be spelled with keys on the first row. There was another type of keyboard designed, called the Dvorak keyboard invented by a John Dvorak, but just like with say VHS and beta, sometimes the lesser or most used wins out. People just don't like change generally. Interestingly enough, according to tech journalist John C. Dvorak, he is related to the guy that invented the Dvorak keyboard.

As far as I know, the keyboard of a computer was just copied from the keyboard of a typewriter. Remember the typewriter? Whenever you type so fast the metal thingies get stuck together. So the original a-z keyboard was revised so that typists would have to spend time trying to find the letters because there is no pattern to the arrangement. And that prevented the metal thingies to be stuck. Well, at least for a while. We're so used to this setup now that if it was re-arranged to a-z, we'd be lost.