Walking out is not failure. Staying to avoid awkwardness is.
Know When the Film Has Lost You
The sunk-cost fallacy has a particularly strong grip in a cinema. You paid for the ticket, you queued, you found your seat — leaving feels like waste. It isn't. The time already spent is gone whether you stay or go, and forty minutes is a reasonable threshold: long enough to distinguish a slow film from a bad one, short enough to salvage the afternoon.
The forty-minute rule is not science, but it has a useful logic. Most films have declared their intentions by then — in rhythm, in tone, in what they ask of you. If what they're asking is something you genuinely cannot meet, that's information, not defeat. Cannes programmers don't attend every screening they select; you can leave one you chose.
What the rule guards against is quitting too early. The first ten minutes of a difficult film can feel like an insult; sometimes it's an entry fee. Give it a real chance before you decide it isn't paying off. Forty minutes is that chance.
The heuristic
the point at which a film has usually revealed what it is; a practical threshold, not a law
How to Go Without Becoming the Problem
The principled exit is a skill. Do it badly and you're the disruption you came to escape. The back row exists precisely for this — if you can get there at the start, before the lights go down, you lose nothing and gain a clean escape route when you need one. That's its own argument, and it's a good one.
If you're already seated mid-row: wait for a loud moment in the film, not a tense or quiet scene where movement will register on every peripheral nerve in the room. Stand low, move slowly, do not let the door slam. Nobody needs your apology.
And once you're out, resist the urge to account for the decision — to a companion, to yourself. You exercised judgement in real time, under real pressure, with incomplete information. That is exactly what festival-going asks of you.
