I guess people that are victims of random violence weren't using their brains when doing day to day things like shopping and a guy comes in stabbing people (Utah). Always be aware, but once again there are things that are out of your hands. No one could have used their brains to avoid the Tacoma Mall shooting near me as no one can predict situations like that. How can you make decision on something you aren't aware about? I do agree that your firearm in the last resort though. Just FYT (follow your training) and use the least amount of force necessary to manage a situation. Anyways, I run how I train and always keep one in.