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 Originally Posted by wufwugy
In economics, they are both thought of in terms of utility (preferences). It can be thought of like how stealing for a particular monetary gain may benefit somebody by 30 utility while killing for fun may benefit him by 35 utility, which means he will choose to kill for fun since it better suits his preferences.
What of the person who kills for sport, and enjoys the challenge of it all? You're trying to say "ppl with guns deters other ppl with guns", but that only works with ordinary people...if it works at all. People willing to massacre Innocents are not ordinary. Their motives are different from ours.
Burglars tend to fit your theory. I live in an area with lots of snowbirds, aka travellers who visit during the winter months. Their homes get burglarized in the summer, because they arnt here to defend them. Clear case of opportunity...but it's because the success of a burglar depends on maximizing income, and minimizing getting caught. The only examples of deterrence working, that I know of, come from burglaries. (Gun laws, actually. By increasing the felony and punishment if a gun was involved, burglars carried guns less often)
That's not the case with other crimes. People are freaking weird, and do all kinds of things for all kinds of reasons. If a kid really wanted to shoot up his school, he's gonna try. Metal detectors be damned
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