>They make a point of saying wormholes aren't a
>naturally-occurring phenomenon, and that's the real science.
>Wormholes are allowed in general relativity, but large ones
>don't form spontaneously, and any that might exist will have a
>finite (and normally rather short) lifetime until the
>connection "pinches off" and both sides collapse into black
>holes.
>
>The statement in the movie is that the wormhole was built by
>the five-dimensional beings, and at the end of the movie
>McConaughey guesses that those five-dimensional beings are
>actually humans from the incredibly distant future.
>
>Now, this sets up a bit of a paradox: if the humans of the
>distant future were the ones who built the wormhole, and the
>wormhole was needed for humanity to survive into that distant
>future, then how did they survive long enough to build it? The
>answer is that the humans of the distant future built it, and
>they survived long enough to build it because it was there,
>and it was there because they survived long enough to build
>it, and they survived long enough to build it because it was
>there, ...
>
>It's intentionally paradoxical, but this is how time works in
>general relativity (as far as we know). If every moment you
>march toward the future, you can eventually come out in what
>you would have ordinarily called the past. Or if you trace
>history long enough into the past, then you might eventually
>land in what you would have ordinarily called the future. The
>technical term for this is a "closed timelike curve", and
>they're a topic of much discussion in theoretical physics. I'm
>sure that this one was inserted intentionally into
>Interstellar because one of the people who founded the study
>of these closed timelike curves was Kip Thorne. (I linked to a
>paper in post 146, above.)

but look at reply 110 from C Truth

how could humans have put it there even if evolved...