Memento
Christopher Nolan · 2000
Leonard's polaroids with handwritten captions, his tattooed facts and his annotated notes add up to a memory system. The film shows that it can be gamed. Anyone who understands his condition can rewrite his reality by tampering with his notes. This outside memory is less reliable than the memory in his head that it replaced.
Where to see it: Leonard writing on a polaroid. Writing things down turns out to be a way of making up the facts, which is very different from recording them.