Physics of this film: not as far fetched as some claim

Rating: 10/10 (23 August 2015)

Could be spoilers...
It turns out that while highly speculative, the physics of this film is REASONABLE speculation. For example, in membrane theory, it is believed that the gravitational force would extend from one membrane to another, allowing for information transfer between two parallel universes using gravity. As for information transfer through time, that also isn't completely far fetched. It depends upon the nature of spacetime. For example, it is logically possible for time travel to the past to occur without causing causality paradoxes, if time is deterministic (in such a way that a traveler to the past would be predetermined to do actions that are actually "scripted" within the history of the universe in such a way that avoids such paradoxes. That is, the traveling through time is actually part of the determined history of events in the universe. Nothing is changed because the "changes" were scripted).
The people bashing the physics are mostly lay people, lay people who seem to be unaware that a very well respected astrophysicist from Cal Tech named Kip Thorne was heavily involved in this film. To summarize, the physics of the film at the end is very speculative, but none of the speculation is unreasonable. And it's treatment of general relativity is spot on.