As the self-defence crowd like to say, "compliance does not guarantee safety". The attacker in this case: * Was not just threatening the victim, but physicall

As the self-defence crowd like to say, "compliance does not guarantee safety". The attacker in this case: * Was not just threatening the victim, but physically attacking him even as he complied with the attacker's instructions. * Was committing a serious felony for which he would be facing a long long prison sentence even if he left the victim alive (as demonstrated here!), meaning the rational self-interested course of action would be to execute the victim after getting what he wanted, to stop him from identifying the attacker. Whether or not I'd have the courage and presence of mind to do it myself in the victim's place, resisting in this case seems to me like exactly the correct thing to have done, and I suspect it saved the victim's life.