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>is this statement based on some kind of study?

It's based on the law. They punish crimes after they have been committed. Where is the law that doesn't say "if you murder, you go to jail" but instead sets things up so you physically can not murder?

>not terribly convincing... 'crimes happen' doesn't seem to sufficiently demonstrate that 'deterrence doesn't work

Yeah, the part you cut out is the important bit. Sure you could argue 'oh well people are willing to steal a pair of shoes because they only get punished with 3 days in jail so they make a value judgement' if that's what we were talking about. But it's not. I pointed out the case of extreme punishment, death, not even THAT being capable of preventing the simple stupid crimes like stealing a pair of shoes.

>some aren't. some are much, much worse.

'Some' are individuals. I was speaking of humans overall. They're two very different things. Individually humans are impossible to predict, in groups they're among the most predictable things around. 'America went to war with Vietnam in the 60s' is not false simply because there were a bunch of protestors that opposed it. A statement about a group is not a statement about all of the individuals within it, and language would be incapable of functioning if that was the standard you attempted to apply.




> Where is the law that doesn't say "if you murder, you go to jail" but instead sets things up so you physically can not murder?

is the only way to prevent murder a physical impediment?

does talking an attacker out of their plans count as preventing a murder?

> I pointed out the case of extreme punishment, death, not even THAT being capable of preventing the simple stupid crimes like stealing a pair of shoes.

again, you seem to be suggesting that 'deterrence doesn't real' because crime still exists. it seems you're presenting deterrence as an all-or-nothing dichotomy.

> 'Some' are individuals. I was speaking of humans overall.

indeed, and that's the point. pointing to a vague generalization about humans doesn't keep your kids safe.




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