A long blog post explains why the author, a feminist, is not comfortable with the rationalist community despite thinking it is "super cool and interesting". It's directed specifically at Yvain, but it's probably general enough to be of some interest here.
http://apophemi.wordpress.com/2014/01/04/why-im-not-on-the-rationalist-masterlist/
I'm not sure if I can summarize this fairly but the main thrust seems to be that we are overly willing to entertain offensive/taboo/hurtful ideas and this drives off many types of people. Here's a quote:
In other words, prizing discourse without limitations (I tried to find a convenient analogy for said limitations and failed. Fenders? Safety belts?) will result in an environment in which people are more comfortable speaking the more social privilege they hold.
The author perceives a link between LW type open discourse and danger to minority groups. I'm not sure whether that's true or not. Take race. Many LWers are willing to entertain ideas about the existence and possible importance of average group differences in psychological traits. So, maybe LWers are racists. But they're racists who continually obsess over optimizing their philanthropic contributions to African charities. So, maybe not racists in a dangerous way?
An overly rosy view, perhaps, and I don't want to deny the reality of the blogger's experience. Clearly, the person is intelligent and attracted to some aspects of LW discourse while turned off by other aspects.
I was talking about raising the IQs of large numbers of existing people.
My impression is that there just isn't much interest is looking for physical solutions.
Compare the amount of interest in combating obesity to the amount of interest in becoming more intelligent.
There's a good amount of interest in eg r/nootropics and Gwern has written about the possible benefits of supplementing local water supplies and whatnot. Part of the problem is that the solutions are political complex since they involve A) convincing sufficient people IQ is really a thing and then B) getting large groups of people to admit they're dumb and want their children to be smarter. In terms of technical solutions we're just not there cybernetically yet I don't think. Genetic solutions have the whole eugenics problem to contend with though china seems to be working on it regardless.