8 : Memento -
This isn't a mere gimmick. Because the protagonist, Leonard Shelby, suffers from anterograde amnesia (the inability to form new memories), he is constantly "waking up" in the middle of a situation with no context. By reversing the chronology, Nolan places the viewer in the same state of confusion. We see Leonard running, but like him, we don’t know if he is chasing someone or being chased until the scene unfolds. The Unreliable Narrator
At its core, Memento asks: Who are we if we can't remember what we've done? 8 : Memento
However, the film’s climax (or chronological midpoint) reveals the tragedy of this logic: facts are only as honest as the person recording them. Leonard actively chooses to manipulate his own "system" to create a never-ending cycle of vengeance, giving his life a purpose that his biology can no longer sustain. Identity as Narrative This isn't a mere gimmick
The film’s most famous attribute is its dual-timeline structure. The color sequences move backward in time, while the black-and-white sequences move forward, eventually meeting in a singular moment of revelation. We see Leonard running, but like him, we
Leonard’s identity is built entirely on a mission to find "John G." Without that mission, he is a blank slate. The film suggests that human identity is not a static thing but a narrative we constantly rewrite to make sense of our actions. Leonard’s tragedy isn't his memory loss; it’s his refusal to accept the purposelessness of his existence without his grief. Conclusion
Memento remains a masterpiece because it demands active participation. It transforms the viewer into a co-conspirator in Leonard’s delusion, ultimately proving that we all "edit" our realities to stay sane. As Leonard famously muses, we all need mirrors to remind ourselves who we are—even if the reflection is a lie we’ve carefully constructed.