There's definitely a connection; see this article [1] by legendary Apple UI designer Bruce Tognazzini. You'll have to scroll down just below halfway (or ctrl-f)

There's definitely a connection; see this article [1] by legendary Apple UI designer Bruce Tognazzini. You'll have to scroll down just below halfway (or ctrl-f) to the section titled "Fitts’s law". Looks like Tog hasn't quite understood the UI implications of adding the ID attribute to headings ;-) [1] http://asktog.com/atc/principles-of-interaction-design/ http://asktog.com/atc/principles-of-interaction-design/