I've been using computers for over 20 years and believe me, every one of these actions has worked at some point. Clicking might get the application into anothe

I've been using computers for over 20 years and believe me, every one of these actions has worked at some point. Clicking might get the application into another state, or at least get the operating system involved in killing it of. Pressing return might answer hidden input fields (wrong focus, broken modal dialogs). Pressing escape might help exit one of these. Pressing ctrl-alt-del gets the OS involved... etc. etc. What UI experts ignore, is the fact that a crashed/freezing application is no longer in a well-defined state. Therefore the apps logic no longer applies.