First off, it sure seems that Wikipedia and I am sure I have read books that state that according to General Relativity, Time dilation occurs in gravity and inertial acceleration alike since they are equivalent.
The gravitational form of time dilation is co-present with an inertial frame. It is awkward, but it seems very very clear. But reading this thread: http://www.physicsforums.com/showthread.php?t=237212 There is an experiment that seemingly disproves that. So this is a possibility I had not bothered to consider, that General Relativity is wrong about gravitational time dilation (taking wiki's word for it) and already dis-proven. And so the clock should not change since it wasn't time dilated in the first place. BUT this also means that while the equivalence principle might retain it's claim to fame, you can't tell in the box which is which. You couldn't argue that the physical phenomena are in any way alike, since one effects time and one doesn't, which is a huge difference. John

