All I've seen is assertions it was possible.
That you think this is my argument is just pathetic.Homicides don't seem likely to end ever.Homicide has existed for thousands of years, guess we should tell the victim's families to sack up, its not worth getting upset over. (yeah, taking a page from your sig as well.)
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We should take means to prevent attacks. We should deal with people who attack us, like the criminals they are. What we don't need is years and years of constant war trying to stop anyone from ever using a tactic that has existed for thousands of years.