This review may contain spoilers. I can handle the truth.
saraharon’s review published on Letterboxd:
This review may contain spoilers.
"Do you even know quantum mechanics or parabolic calculus???"
The plot didn't make any sense. The twitchy, dead, half-body of Jake Gyllenhaal freaked me out. And indeed, I do not understand quantum mechanics.
It was still a fun movie though and I would (probably) watch it again.