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prase comments on Describe your personal Mount Stupid - Less Wrong Discussion

10 Post author: shminux 03 January 2012 06:37PM

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Comment author: prase 03 January 2012 09:55:30PM 4 points [-]

unbiased

Any cognitive strategy is a bias, sort of. Take Occam's razor as illustration: if the truth is complicated, starting with Occamian prior is an obstacle. If the the laws of nature were complicated, Occam's razor would be classified among other cognitive biases. We don't call it a bias because we reserve that word for errors, but it is pretty hard to give a non-circular precise definition of "error".

perfect

Are you sure that it is not the case that for each cognitive strategy there is a better one, for any reasonable metric?

Comment author: fubarobfusco 04 January 2012 05:07:09AM *  1 point [-]

Take Occam's razor as illustration: if the truth is complicated, starting with Occamian prior is an obstacle. If the the laws of nature were complicated, Occam's razor would be classified among other cognitive biases.

There are more ways to be complicated than there are to be simple. Starting with a complicated prior doesn't (EDIT: necessarily) get you closer to the complicated truth than starting with a simple prior does. Even if the truth is complicated, a complicated prior can be wronger than the simple one.

Comment author: prase 04 January 2012 09:52:28AM 0 points [-]

Yes, a complicated prior can be wronger than the simple one and usually is. I am sure I haven't disputed that.

Comment author: fubarobfusco 04 January 2012 10:06:07AM -1 points [-]

Sorry, maybe I misread. The line I quoted above seemed to suggest that "if the laws of nature were complicated," then we would be better off having priors that favored complicated beliefs over simple ones — or at least considered them equal — rather than an Occam prior which favors simple beliefs.

Comment author: prase 04 January 2012 02:01:06PM 0 points [-]

I have suggested that we would be better off having priors which favour the exact way of how the laws are complicated. Of course, a general complicated prior wouldn't do the job.

Comment author: EStokes 03 January 2012 11:18:01PM -1 points [-]

It seems to me that there would be priors that are useful and those that aren't would biases, and that there would be optimal priors to have.

I don't see why there should be a better strategy for every strategy, either, because one would finally be perfect.