Monday, July 23, 2012

Why We Should Be Wary of the Confirmation Bias

From the prodigious Matt Ridley writing at the Wall Street Journal,

One of the alarming things about confirmation bias is that it seems to get worse with greater expertise. Lawyers and doctors (but not weather forecasters who get regularly mugged by reality) become more confident in their judgment as they become more senior, requiring less positive evidence to support their views than they need negative evidence to drop them.

The origin of our tendency to confirmation bias is fairly obvious. Our brains were not built to find the truth but to make pragmatic judgments, check them cheaply and win arguments, whether we are in the right or in the wrong.

I find this very relevant, especially the last sentence. Debates at social network sites seem as testament to these.

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