This is the smartest time-loop movie no one talks about

Time travel movies that take themselves seriously are often doomed to failure because it’s pretty much impossible to write a story about time travel that doesn’t have massive contradictions or paradoxes. The exception is Primer, a 2004 independent film made for around $7,000. Primer doesn’t have big stars or any special effects to speak of, but it does have the most scientifically literate script of any movie about time travel ever written, which is more than enough.