Whatever “expert” opinion means in this context, it does not mean an accurate opinion.

Cass Sunstein, regarding a case-study on doctors’ opinions as a reflection of expert biases; Statistics, Not Experts, December 2000. He goes on to say:

What we are suggesting here is that because individual experts are distinctly prone to error, it would be far better to begin the process with reliable evidence rather than particular recollection.

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