One rule of thumb in fighting is that crazy can often overcome skill and numbers, because, while a trained fighter might actually enjoy going up against another trained fighter, no one really wants to wrestle with crazy. Crazy doesn't know when it's winning. And crazy doesn't know when to stop. If you can't pull off crazy, if, for instance, you're handcuffed in a small van with six armed assailants, stupid is a decent substitute for crazy.