An anonymous reader writes: Slashdot recently reported on alleged brain differences between liberals and conservatives as described in Nature Neuroscience. An article in Slate challenges the study as not proving its claims. It concludes: 'Sometimes, [conservatives'] inclinations lead us astray. But over the long run, they've served us and society pretty well. It's just that you [liberals] notice all the times we were wrong and ignore all the times we were right. In fact, that's exactly what you've done in this study: You've manufactured a tiny world of letters, half-seconds, and button-pushing, so you can catch us in clear errors and keep out the part of life where our tendencies correct yours. And now you feel great about yourselves. Congratulations. You haven't told us much about our way of thinking. But you've told us a lot about yours.'