3 ms·
> That doesn't mean that he actually crosses it from our reference frame. This specifically is an incorrect understanding. All events happen in all reference f
by db48x 2y ago
> That doesn't mean that he actually crosses it from our reference frame.
This specifically is an incorrect understanding. All events happen in all reference frames. There are no situations where an event that happens in one reference frame fails to happen in another. At worst (or best, depending on how you view it) we can disagree about the _order_ of events, but not which events actually happened.
- rbanffy 2y agoIt’s not that the crossing fails to happen. It’s just that, from the outside it takes an infinitely long time to happen and, for the diver’s perspective, it’s the universe outside that ended really quickly.