Vaniver comments on An Intuitive Explanation of Solomonoff Induction - Less Wrong
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Comments (210)
The soldier in the probability section updates in the wrong direction. If you survived two shots to your helmet, then you were almost certainly not being shot at with a sniper rifle. For instance, my Mosin Nagant (a bolt-action 7.62x54mmR) will penetrate both sides of a WWII era infantry helmet (and presumably, a "soft target" in between) every single time (although, at a shorter range).
BTW, love the article.
Turning it into a 'helmet on a stick' probe seems like the cleanest way to alter the story.
Though, in Pratchett when someone tried that, the shooter had a pretty good model of how clever the soldier was, and shot at where someone would be lying to hold a helmet on a stick.