Thank you, I'm pretty surprised by that result. Two questions: does assortive mating merely slow down that process? And is there any way to increase the both the average and the standard deviation?
You need new mutations to increase the standard deviation, that takes a lot of time and a big population size.
Also, having a genetic disorder applies larger selection pressure to the other genes.
If we are to think of some real 'eugenic' population bottleneck, such as WW2 related, the correlation between intelligence and survival is, frankly, shit, plus a lot of small, geographically co-located sub-populations where a bunch of beneficial genes have been slowly increasing in prevalence get completely wiped out, with loss of all copies of that gene.
Bottom l...
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:
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.