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Re: Race, intelligence, and anti-racist prejudice (Was: Genetic Evolution)
John Atkinson (johna@jda_pc.me.su.oz.au)
Wed, 15 Feb 1995 08:02:26 GMT
In article <3hmqls$1is@ixnews2.ix.netcom.com> lsd@ix.netcom.com (Lane Singer) writes:
>In <tlathropD3ws2z.Ku7@netcom.com> tlathrop@netcom.com (Tom Lathrop) writes:
>>[...]
>>
>>Oddly enough, regression to the mean does not seem to have prevented us
>>from breeding faster racehorses, has it? :-)
In fact, over the last 200 years or so (which is about as long as we've
got decent records, both of times and pedigrees), the speed of racehorses
has *not* increased "significantly" (well, not more than a percent or so,
which is readily explained by environment, including better racetracks).
This is despite hundreds of millions of dollars invested in breeding for
this one trait alone. It's probably the biggest failure in the whole field
of animal breeding.
And, by the way, in less than 100 years, without any selective breeding
for speed at all that I know of, the fastest humans have speeded up by
about 20% . . . .
I don't know what this proves. Except that you could have picked a better
example!
John
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