Fitts' Law is certainly not lost on large displays, set up Expose to use hotcorners and you'll be hitting infinite-width-targets hundreds of times per day. Sam

Fitts' Law is certainly not lost on large displays, set up Expose to use hotcorners and you'll be hitting infinite-width-targets hundreds of times per day. Same for screen edges: Taskbar buttons or the tabs in Chrome on Windows are awesome, extremely easy to target, because they're on the edge of the screen. (The New Tab Button was recently made Fitts'ier as well: http://code.google.com/p/chromium/issues/detail?id=48727 http://code.google.com/p/chromium/issues/detail?id=48727 ) The issue with the Menu Bar is that it's the wrong thing to be putting on the edge of the screen. The menu items are still extremely easy to hit... it's just that they're no longer useful. No need to have them any more. GUI advances such as the Ribbon or just the concept of removing useless features are leading to apps like Chrome having few menu items at all. On modern apps the cognitive load of the "which-app-is-in-focus?" is the main problem, which you mentioned. But that's a ding against the usefulness of the menubar, not Fitts' Law in general.