When you call it the "Brahmin class" dismissing it becomes redundant.
I think we need institutions though, in which the "marketplace of ideas" isn't just the marketplace. Lesswrong is one of them, as are universities.
I believe that the rules of the game in academic research can be very productive as long as there is a there there. I tried to model this as "discovering natural machines", which is what I think Newton did, or "Finding your Invisible Elephant" -- if the blind men actually have an elephant then they may be able to map it if they go about it the right way. But if they have no elephant - one is hugging a tree trunk, another has hold of a snake and another is pushing on a wall - no amount of "scientific method" will help them find the nonexistent elephant. This is why I think some disciplines, like literary criticism and some branches of sociology, despite having peer-reviewed journals and all that, simply go round in circles, and lead to distrust of others, which have something to offer.
Since many LRers are fairly recent college graduates, it seems worthwhile to ask to what extent would people here agree with reports of rampant irrationalism such as this one: http://www.city-journal.org/2014/24_4_racial-microaggression.html from a right-leaning journalist known for her book The Burden of Bad Ideas (which I'm certainly not promoting).
Some other sources like Massimo Pigliucci (see http://scientiasalon.wordpress.com/) who seem more alarmed by creationism or the idea that all climatology is one big conspiracy, are also quite bothered by extreme relativism in some camps of epistemology, and sociologists of technology and science.
To what extent, if any, do you think PC suppresses free speech or thinking? While sociology and epistemological branches of philosophy have partisans who to me seem to advocate various kinds of muddled thinking (while others are doing admirable work), in your experience, is that the trend that is "taking over"?
To what extent if any do you think any of that is leaking into more practical or scientific fields? If you've taken economics courses, where do you think they rank on a left to right spectrum?
Also, have you observed much in the way of push-back from conservative and/or libertarian sources endowing chairs or building counter-establishments like the Mercatus Center at George Mason University? And I wonder the same about any movement strictly concerned with rationality, empiricism, or just clear thinking.
My mind is open on this -- so open that it's painful to be around all the hot tempers that it can stir up.
Thanks, Hal