ChristianKl comments on Knowing About Biases Can Hurt People - Less Wrong

70 Post author: Eliezer_Yudkowsky 04 April 2007 06:01PM

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Comment author: HalFinney 05 April 2007 02:47:05AM 30 points [-]

I've pointed before to this very good review of Philip Tetlock's book, Expert Political Judgment. The review describes the results of Tetlock's experiments evaluating expert predictions in the field of international politics, where they did very poorly. On average the experts did about as well as random predictions and were badly outperformed by simple statistical extrapolations.

Even after going over the many ways the experts failed in detail, and even though the review is titled "Everybody’s An Expert", the reviewer concludes, "But the best lesson of Tetlock’s book may be the one that he seems most reluctant to draw: Think for yourself."

Does that make sense, though? Think for yourself? If you've just read an entire book describing how poorly people did who thought for themselves and had a lot more knowledge than you do, is it really likely that you will do better to think for yourself? This advice looks like the same kind of flaw Eliezer describes here, the failure to generalize from knowledge of others' failures to appreciation of your own.

Comment author: MarsColony_in10years 30 March 2015 08:42:02AM 0 points [-]

Fantastic article. The problem is that now I have a pet theory with which to dismiss anything said by a TV pundit with whom I disagree: I'd be better off guessing myself or at random than listening to them.

Maybe I can estimate how many variables various conclusions rest on, and how much uncertainty is in each, in order to estimate the total uncertainty in various possible outcomes. I'll have to pay special attention to any evidence that undercuts my beliefs and assumptions, to try to avoid confirmation bias.

Comment author: ChristianKl 30 March 2015 10:30:21AM 3 points [-]

Fantastic article. The problem is that now I have a pet theory with which to dismiss anything said by a TV pundit with whom I disagree: I'd be better off guessing myself or at random than listening to them.

That's great, stop watching TV. TV pundits are an awful source of information.

Comment author: MarkusRamikin 30 March 2015 02:53:51PM 4 points [-]

stop watching TV

One of my past life decisions I consistently feel very happy about.