A friend asked me recently why I kept calling out scientists on their public comments. They’re scientists, my friend said, they’re on your side, so stop being so nitpicky and mean!

Am I being mean?

I certainly don’t intend to be mean, so perhaps it is worth a few lines to reiterate the point of these “Say What?” posts.

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In Part 1 of this post, I introduced this new series, Misconception Monday, and let you in on the secret to my misconception know-how: student test papers. In this conclusion, I want to get into some ways that this misconception, that natural selection eliminates all bad variations, could be tackled, or even headed-off, in the classroom.

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