George Zimmerman's attorneys won't use "stand your ground" defense

[DanTex]

63. Yes, really.

You are suggesting that there is a positive externality associated with self-defense shootings, in that dead criminals won't go on to kill any more innocent people. Maybe, based on a bunch of assumptions, but it's also possible that the externality could even be negative. And even if we accept that the externality is positive, there's certainly no reason to believe it is sizable.

What's more, the short to medium term effects of this externality are already taken into account by the study, which, IIRC, looked at date over the course of the 2000-2010 decade. You are welcome to speculate about what the long-term effects are going to be, but as usual, your speculations are evidence-free. What the evidence shows is that, in the short to medium term, the effects of SYG laws are more innocent lives lost.