Kaj_Sotala comments on Open thread, Nov. 10 - Nov. 16, 2014 - Less Wrong Discussion
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Reminds me of "The Cactus and the Weasel".
The philosopher Isaiah Berlin originally proposed a (tongue-in-cheek) classification of people into "hedgehogs", who have a single big theory that explains everything and view the world in that light, and "foxes", who have a large number of smaller theories that they use to explain parts of the world. Later on, the psychologist Philip Tetlock found that people who were closer to the "fox" end of the spectrum tended to be better at predicting future events than the "hedgehogs".
In "The Cactus and the Weasel", Venkat constructs an elaborate hypothesis of the kinds of belief structures that "foxes" and "hedgehogs" have and how they work, talking about how a belief can be grounded in a small number of fundamental elements (typical for hedgehogs) or in an intricate web of other beliefs (typical for foxes). The whole essay is worth reading, but a few excerpts that are related to what you just wrote:
That is very interesting and definitely worth reading. One thing though, it seems to me that a rationalist hedgehog should be capable of discarding their beliefs if the incoming information seems to contradict them.