<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Sep 10, 2015 at 6:38 PM, Anders Sandberg <span dir="ltr"><<a href="mailto:anders@aleph.se" target="_blank">anders@aleph.se</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
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What happens is that the new mean intelligence is 150+ (as by the
old scale), turning into a new normal distribution. (I ran a quick
Matlab test). <br>
<br>
What is going on is that the intelligence is due to a lot of genes
adding about 1% or less each, so removing the <150 IQ population
mainly removes some very bad genes and decreases the somewhat bad
genes: there is still a lot of genetic diversity. So the new mean
goes up, but the variance stays about the same. <br><div><div class="h5">
<br></div></div></div></blockquote><div><br></div><div>### Oops, I just sent an unmodified message. Please disregard it.</div><div><br></div><div>Are you sure the variance would stay the same? Wouldn't removing <span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right">99.9570883466% of the population from the reproductive pool lower diversity?</span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right"><br></span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right">The IQ of their offspring would be of course less than 150, with regression to the mean, but there would be still a substantial boost over the current average, to about 130 (</span><font color="#333333" face="Arial, sans-serif"><a href="http://infoproc.blogspot.com/2010/07/assortative-mating-regression-and-all.html">http://infoproc.blogspot.com/2010/07/assortative-mating-regression-and-all.html</a>) and the residual SD would be about 12.</font><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right"> </span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right"><br></span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right">A good reason to make and sequence thousands of zygotes before proceeding to term. For the squeamish you might try to develop a post-meiotic gamete cloning procedure, followed by mass sequencing and zygote generation from vetted but otherwise unmodified gametes.</span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right"><br></span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;text-align:-webkit-right">Rafał</span></div></div>
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