Here is the full quote from Bane in the stadium (emphasize mine):
Now, this bomb is armed! This bomb is mobile! And the identity of the triggerman is a mystery. For one of you holds the detonator! And we came here not as conquerors, but as liberators to return control of this city to the people. And at the first sign of interference from the outside world, or for those people attempting to flee, this anonymous Gothamite - this unsung hero - will trigger the bomb. For now, martial law is in effect. Return to your homes, hold your families close, and wait. Tomorrow you claim what is rightfully yours.
Do the triggerman is supposed to hold a remote control? Or is it someone fleeing that would make Bane trigger the bomb?
Later Gordon explains that Bane would not let someone trigger the bomb:
Script (emphasize mine):
What about the triggerman?
No leads. It’s a bluff - Bane wouldn’t give control of that bomb to someone else.
So I have two questions:
- Why Bane says this even if it sounds hard to believe to other people like Gordon?
- Let's say Bane really did this, how would it work? What would be the point of giving someone else a detonator?