When I was first learning to type, many years ago, I asked the same question everyone else asks: why are the keys arranged so stupidly? Why aren’t they laid out in a more logical order, as in, just to take one random example, alphabetically? The answer I’ve heard countless times is that the first typewriter keyboards were arranged alphabetically, but that caused mechanical problems—once typists became reasonably proficient, the keys jammed frequently because the hammers corresponding to certain frequently used letter sequences were too close together. As a result, so the story goes, the QWERTY layout was designed to prevent jamming by moving those letters farther apart, thus slowing down the typists to a speed the machine could handle. Meanwhile, a more sensible and efficient layout called the Dvorak Simplified Keyboard has been around for a long time, but never became very popular because QWERTY simply had too much momentum in the marketplace.
That story has frequently been used (even by me) as an example of how an inferior, inefficient design came to be the standard—and remained so, long after the original reasons for its success became irrelevant. But the truth is more complicated and surprisingly controversial. [Article Continues…]