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I disagree, if it's new information or perspective, not discussed recently and broadly interesting it could be appropriate. That said, this article is pretty trollish, at least the beginning. Whether you agree or disagree with the side remarks he's making, he's throwing out stuff that will provoke an angry response and not advance the discussion.

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He addresses that: "It’s easy to understand why those suffering from the crime may regard it as an unacceptable indulgence to inquire into why it happened and whether it could have been avoided. Understandable, but mistaken. If we want to respond to the tragedy in ways that will help the victims, and avert still worse catastrophes that loom ahead, it is wise, and necessary, to learn as much as we can about what went wrong and how the course could have been corrected. Heroic gestures may be satisfying. They are not helpful."

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