Sam Harris talks about violence, self defense and how likely we are to do the wrong thing in dangerous situations:
It may seem onerous to prepare yourself and your family to respond to violence, but not doing so is also a form of preparation. Failing to prepare is, generally speaking, preparing very well to do the wrong thing. Although most of us are good at recognizing danger, our instincts often lead us to behave in ways that increase our chances of being injured or killed once a threat emerges.