After reading a few movie reviews, although some people think the plot is controversial, I don't think there is a big logical flaw. Here are my thoughts on the possible doubts that everyone thinks:
- The protagonist is not schizophrenic, Cobb and the heroine are real - Cobb is the one who forged the box at the beginning of the film, in order to frame Bill, and is consistent with Bill's testimony - There are indeed two people in the cafe, and the waiter also gave two cups of coffee, not Empty Cup - Cobb told the heroine that killing the old woman was a lie to the heroine, twisting the purpose of the whole game, and the heroine telling Bill this may have prompted Bill to turn himself in. Although it doesn't affect Cobb's plans whether he turns himself in or not - even if Cobb doesn't get the murder weapon, the other circumstantial evidence is enough to make Bill the biggest suspect. The heroine's stuff, Club's injured subordinate and Bill's confession - Bill knows the password, although the heroine died after Club's subordinate was injured, the police can also interpret it as getting the money and coming back to silence - the Boss doesn't need to know the details, he only You need to tell Cobb to be careful to deal with the heroine.
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