James Norton, Nikolaj Coster-Waldau and Eddie Marsan tell Lynn Rusk about power and rivalry in their historical drama series ...

The sunk cost fallacy is deceptively simple: the irrational tendency to continue with something, not because it makes sense in the present, but because of the time, money, or energy already invested.

Numerous weddings have been ruined in Game of Thrones, but its most infamous one was already done in Roar years earlier.