I'm not suggesting that they give up the 2nd Amendment. That's just how they roll, like how we like to drink too much booze and drive too fast. I'm questioning the effectiveness of it.

How could an experiment be designed to measure the effectiveness (computer simulation )? That one way to think about it. Another way and I would say it's more kid like is to use your gut. For example, if we were playing a simulation game like Civilization and you had the option to allow guns like 2nd amendment or not like Europe what would you choose? I would choose to allow guns. Why? Because I have an exptation of my citizens to act morally and I also know my country is likely to be invaded (almost always happens). By trusting my citizens and arming them as the supreme omnipotent leader I would expect better security for my nation. Militias could be formed more quickly. It takes time to distribute guns and if the opposing general is serious that is precious time that can be exploited. In ending while I'm Christin I'll quote Lao tzu "By not trusting the people you make them untrustworthy"