Some of the best movie twists come from preying on an audience’s assumptions.
A cripple can’t be the bad guy – Usual Suspects.
Fathers of good guys are also good – Star Wars.
Of course Brad Pitt is real – Fight Club.
The filmmakers probably have great fun leading the audience astray.
It’s not a good twist if the audience can see it coming and the audience is only with the characters for a few hours so they have to make some assumptions.
I think it’s a good thing there aren’t intermissions any more. As it gives the audience less time to correct their assumptions.
