re: #252 rawmuse

That is a little harder to come by and, though I have no expertise, I imagine open to a good deal of debate, but here is a criminologist at Florida State that claims a good deal of deterrence against certain assaults prevention

He is responding to these guys:
no prevention

and here are a couple of public policy guys at Duke that have a more systematic analysis and claim no deterrence against burglaryno prevention again

So anyway, I think the takeaway might be that it’s hard to say - and it won’t be settled with my Google Scholar search, but it might be noted that the most reputable research organization out of the three I posted there is certainly the National Bureau of Economic Research, so we might initially give them a little more credence.