I still haven't seen it, so I can't say who's right above. However, I have to admit I think they could have easily just done a "reboot" with actors in their thirties and skipped the whole "rip in the fabric of time/younger Kirk" set up.
I realize that some of the Trekkies would have whined, but if they can reboot, for example, Batman and Bond without having to "explain" why there's a different cast I think the same could have been accomplished with Trek.
