Razib: I am refuting an argument from exclusion by citing an instance of genetic drift. By citing African populations, I am merely illustrating the utility of the NRY and mtDNA loci in deciphering population history on a global scale even though these two loci are obviously limited and imperfect. 
 
You assert that the utility of the NRY and mtDNA while useful on the global scale is somehow lessened when examining individual population histories such as the population history of Central America. But in fact the inference gained from the NRY and mtDNA studies of Central America namely of a mixed population descended largely from Spanish men and MesoAmerican Women was in fact corroborated in a recent genomewide autosomal study which showed, surprise! a mixed population largely descended from both Spanish and MesoAmerican populations (1). 
 
Attacking the usefulness of the NRY and mtDNA in elucidating population histories is almost as ridiculous as asserting that a population nearly half of whom are recently descended from 4 individuals will not exhibit parallel instances of genetic drift in other loci which is what Greg Cochran requires for his argument from exclusion. 
 
To the contrary, mtDNA studies have been very useful not only globally but in helping to elucidate the population histories of even smaller  
founding populations such as those in Central America and the Americas (2). They will likewise almost certainly be helpful in elucidating the population history of the ancestral European Jewish population together with a more detailed autosomal history once its assembled. Is mtDNA the final word? Of course not, but neither can one blithely avoid the evidence that it suggests. 
 
1) Wang S, Ray N, Rojas W, Parra MV, Bedoya G, Gallo C, Poletti G, Mazzotti G, Hill K, Hurtado AM, Camrena B, Nicolini H, Klitz W, Barrantes R, Molina JA, Freimer NB, Bortolini MC, Salzano FM, Petzl-Erler ML, Tsuneto LT, Dipierri JE, Alfaro EL, Bailliet G, Bianchi NO, Llop E, Rothhammer F, Excoffier L, Ruiz-Linares A. Geographic patterns of genome admixture in Latin American Mestizos.PLoS Genet. 2008 Mar 21;4(3):e1000037. 
http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.1000037 
 
2)Fagundes NJ, Kanitz R, Eckert R, Valls AC, Bogo MR, Salzano FM, Smith DG, Silva WA Jr, Zago MA, Ribeiro-dos-Santos AK, Santos SE, Petzl-Erler ML, Bonatto SL. Mitochondrial population genomics supports a single pre-Clovis origin with a coastal route for the peopling of the Americas. Am J Hum Genet. 2008 Mar;82(3):583-92. 
 
[you need to type slower, it's really ridiculous to use my name as your handle - Razib]

Razib, I can add that the first Ashkenazi mtDNA studies such as those of Thomas et al. 2002 failed to detect this profound contraction. It was only later when the world-wide frequencies and haplotypes of the relevant lineages were found that such a profound contraction was found.

Razib an argument of exclusion for selection based on the purported exclusion of genetic drift in an ancestral population need only be refuted by the demonstation of an established instance of drift to disprove the contention. Similarly, one counter-example in mathematics can disprove a theorem.  
 
Obviously mtdna and NRY for that matter are uniparentally transmitted lineages and only elucidate the population history of a fraction of present day genetic diversity, but thus far they have done pretty well in describing human population history. 
 
Detailed autosomal studies are in their infancy but thus far have depicted similar worldwide population histories as NRY and mtDNA albeit autosomal loci have much older recent common ancestors but this is an artifact of the uniparental transmission of NRY and mtDNA. It is therefore naive to assert that such a profound mtDNA contraction as demonstrated above will not be likewise verified among autosomal loci once they are more fully investigated.

Greg: You need to present real evidence explicitly proving how particular mutations increase IQ complete with biologically plausible mechansisms, and detail the population history of these lineages. Arguments from exclusion will only get you so far. 
 
Moreover a profound contraction/bottleneck was already proven two years ago where it was shown that almost half of present day Ashkenazi Jews or 8 million people are descended from just four women. 
 
The matrilineal ancestry of Ashkenazi Jewry: portrait of a recent founder event. 
 
Am J Hum Genet. 2006 Mar;78(3):487-97. 
 
Behar DM, Metspalu E, Kivisild T, Achilli A, Hadid Y, Tzur S, Pereira L, Amorim A, Quintana-Murci L, Majamaa K, Herrnstadt C, Howell N, Balanovsky O, Kutuev I, Pshenichnov A, Gurwitz D, Bonne-Tamir B, Torroni A, Villems R, Skorecki K. 
 
Finally many contemporary Near Eastern populations like Ashkenazi Jews are older and larger than the CEU population from Europe because Europe WAS populated from the Near East. Just like Africa is an older, larger population than the rest of the world because Africa was not associated with such a massive bottleneck approximately 70 KYA that the rest of the world was.

Here's the thing.

Non-blondes are calling the blondes attractive, stupid, having to use looks to get around life, etc...... While
the blondes are saying they're jealous cause they've got all the guys swooping around them, etc............

For both sides it is true.

Most non-blondes are just sick of the stuck-up personailties of blonde people who think they're better than
everyone else, while others are actually jealous. I'm not saying all blondes are stuck up attention seekers.
But most of them are and even if they don't admit it and go on the other side claiming that they're the ones
being wrongly bullied for just being blonde while it's their fault in the first place.

I've only ever known one natural blonde in my life who doesn't flirt with boys or dyed her hair to attract
attention. She's a great person and everyone loves her for just being who she is and no one teases her
about being blonde. While many other blondes are being bullied. Why? She's just herself and doesn't care
if she's attractive or not. She's proud of her natural hair colour and you should be too!

People who truely love and care for you in life will judge you by your heart not with your looks. People
who like others by looks or popularity will start lying to themselves saying he/she's fun, kind and caring
etc.... are only creating illusions for themselves becasue they just want the person to be that way and so
believe in it. While the other person will start moulding into the kind of person they think their other
person would want them to be, so they won't lose them. (I had a friend who always whore white socks to
school but them started wearing black saying her boyfriend thinks they're more sexier)This is an example
of it.

I would rather get with a person who loved me just for being myself than live a lie and have to do this and
that to keep and please them.