> My example kinda covers this, phones really are getting faster... It's no longer a case of "I know what I'm doing" when it now comes down to human recognition and reaction time. In other words, you clicked allow before your brain had time to stop you. How do you prevent this?

If this really is a problem, the OS could pop up a question such as "This app is requesting escalated privileges", and then wait ten seconds before popping up the allow/deny buttons so the user doesn't click blindly.