Anyway, for my money, this issue falls well into the "willful suspension of disbelief" category - and didn't affect my appreciation of the movie at all.

I mean, yeah, it was billed as a "scientifically accurate' movie, but it's still science fiction at the end of the day, with the emphasis on "fiction".

It's by far my favorite way to explain time travel system like the one we see in Interstellar, and it's rooted in real science rather than Paradox Philosophy.

> in a CTC, causality breaks down, because an event can be "simultaneous" with its cause—in some sense an event may be able to cause itself.