Primer
Complexity makes knowledge fragile when each attempt to control events creates new uncertainty.
The film's dense structure turns comprehension into a problem of evidence: each account may be incomplete because the observer is entangled in the system being observed.
Time becomes more than a neutral sequence. The possibility of revising an event raises questions about responsibility when a person can act with knowledge unavailable to others.
A desire to optimize outcomes can multiply interventions until no one can confidently say which version of events they are accountable for. The film resists the fantasy that more control necessarily produces more understanding.
Its speculative mechanics are not physics. They form a pressure test for decision-making: when knowledge is partial and consequences compound, restraint may be more rational than another attempt to perfect the outcome.
When I try to correct a mistake, how will I know whether my intervention reduces harm or creates another chain of consequences?