Steve Jobs was only correct in the context of a media consumption device. Having only physical buttons would prevent apps like YouTube from allowing users to se

Steve Jobs was only correct in the context of a media consumption device. Having only physical buttons would prevent apps like YouTube from allowing users to select a timeline position to jump to that position in a video clip, and touchscreens are certainly better hardware for games like Bejewelled. Where he was wrong is that professional use requires muscle memory to build mastery of the tool, and that the flexible nature of touchscreens fundamentally prevent people from developing muscle memory. Professionals derive enormous benefit from fixed-button interfaces that are impediments or limitations for the mass consumer market. (Automobiles are the main exception to this rule, since they require blind usability, but most consumer products don't require blind usability.)