Interstellar is an interesting revision of the same themes apparent in 2001: A Space Odyssey. Time features large and the idea of literally warping time is now theoretically possible. The vastness and complexity of the universe, or multiverses are increasingly known to us. We have devices in space now that can look at the some of the oldest light in the universe. We have caused a particle to exist in two places at once.
And yet, despite all of this knowledge about our position in spacetime, that is our position in existence, we cling to old fears and identities. We still scream at each across lines on maps, or colours of skin, or whatever confabulations tell us we are somehow divisible from each other like fire and water, not beings made of the same matter as the stars around us.
What we are so much more than we claim to be.