The “epistemic closure” debate, continued

Well, this is a must-read. Jim Manzi takes a baseball bat to Mark Levin’s Liberty and Tyranny:

I started to read Mark Levin’s massive bestseller Liberty and Tyranny a number of months ago as debate swirled around it. I wasn’t expecting a PhD thesis (and in fact had hoped to write a post supporting the book as a well-reasoned case for certain principles that upset academics just because it didn’t employ a bunch of pseudo-intellectual tropes). But when I waded into the first couple of chapters, I found that – while I had a lot of sympathy for many of its basic points – it seemed to all but ignore the most obvious counter-arguments that could be raised to any of its assertions. This sounds to me like a pretty good plain English meaning of epistemic closure. The problem with this, of course, is that unwillingness to confront the strongest evidence or arguments contrary to our own beliefs normally means we fail to learn quickly, and therefore persist in correctable error.