No need for agonised puzzlement. It's simple. Lanza was a psychopath. Many are. Difference is, he lived in a culture that glorifies guns.
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@andrew_jackman@dibblego@richarddawkins That's just correlation though, right?
@lancewalton @andrew_jackman @RichardDawkins yes establishes correlation only; be sure that it persuades in no way for the proposition
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@dibblego@andrew_jackman@richarddawkins Genuine question: how do studies linking smoking with cancer do other than measure correlation? -
@lancewalton@andrew_jackman@RichardDawkins there is a control group and there is repeatability. Both are important to experiment design. - Show replies
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