Vladimir_Nesov comments on Guess Again - Less Wrong

15 Post author: Alicorn 09 August 2009 07:11PM

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Comment author: cousin_it 10 August 2009 03:53:12PM *  1 point [-]

I was pretty skeptical about your Bead Jar post, but now have changed my mind. This stuff is interesting, even disturbing. In the bead jar game it seems that one should assign tiny credence to "cerulean" and thus huge credence to "non-cerulean", but not be surprised when "non-cerulean" fails to occur. Do you have some kind of general theory of when surprise occurs or should occur?

Comment author: Vladimir_Nesov 10 August 2009 04:03:55PM *  2 points [-]

IIRC, the conclusion was that "surprise" is when some low-probability complex hypothesis suddenly rises to prominence. Thus it's not something that describes one of 100000 same-probability events happening, but something that describes one winning a lottery 10 times in a row, or an old lame horse winning the race, in which case you start suspecting that something is going on. If a low-probability event doesn't give a hint that something unexpected is going on, there is no surprise.

The emotion of surprise itself is possibly an adaptation that tells the brain to pay attention, to try to figure out what that new unexpected phenomenon might be and what else that entails.