Nice interview with Jef Raskin, creator of the Macintosh project at Apple and bOING bOING contributor.
very confused as to its use and when I was designing the software for the Macintosh, in designing the interface, I figured that if there was only one button, there would never be any question on what you have to press the number of ways of using a one-button mouse. I think this was probably a mistake, in fact there is an appendix in my book which discusses why I think this was a mistake and what I think I should have done. One of the reasons I made the mistake is that there is a certain school of industrial design dating back to the Bauhaus which says that designs have to be simple, uncluttered, and clean. In particular, don’t put writing on it except for brand names or logos. If we had had a multiple-button mouse with two keys, labeled something like “select” and “activate,” it would have been much easier to use, but the idea of putting writing on keys did not occur to anybody, including me. So if I was designing one today, it would have two buttons and they would be labeled. The labeling also the other good effect of forcing software designers to use them as labels otherwise it’s clear that they are being misused.
Link
…excerpt from: http://boingboing.net/2004_03_01_archive.html#107886930266706926