Thought provoking mind bending movies

Didn't get through the whole thing, I hate those "one entry per page" articles. A few of the more purposefully ambiguous films there I love even though I don't quite 100% get them (Only God Forgives, INLAND EMPIRE, Under the Skin), but thats part of the appeal. Primer is the one that really did me in. Halfway through, and the movies only like 70 minutes long and I was already completely lost.

A large percentage of these "mind bending movies" are only thus because they are incompetently made. I thought "Arrival" was pretty clear (even though I had to explain it to my neighbor). The two Shane Carruth films (Primer and Upstream Color) are really mind benders, as are David Lynch films. Most time travel movies (maybe ALL of them) contain paradoxes that cannot be explained and have be ignored or hurried through in the hope that no one will notice. Usually, just stopping to think for 30 seconds will resolve most questions or, if needed, give the film in question a second watch. Like another respondent on this thread, I don't like these click bait sites where you have to go (slowly) from one point to another. They are rarely helpful or informative. 

"Predestination" for me, too. I should have mentioned it in my original reply. Why is Sarah Snook not a star by now?