I suppose that's true, I'm aware of some fallacies (such as anchoring bias) which don't seem to be changed by knowing they exist, and some fallacies which seem

I suppose that's true, I'm aware of some fallacies (such as anchoring bias) which don't seem to be changed by knowing they exist, and some fallacies which seem to change pretty drastically upon finding out about them (such as fixed mindset (as opposed to growth mindset)). I'm not sure which category sunk cost fallacy falls into.