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Dr Adam Rutherford
@AdamRutherford
, 3 tweets, 1 min read Read on Twitter
* All sport is unfair.
* Top level athletes are genetic, psychological and social outliers.
* All rules in sport are arbitrary
* The underlying biology of sporting success is poorly understood and immensely complicated.
1/n
* My opinion is that the arbitrary application of an arbitrary testosterone level in a few specific races is a poor decision
* As the IAAF says, the ruling is discriminatory, but I do not agree that makes those races more fair
* What do we want from sport?
* In short: this is really complicated and there is no totally fair ruling or system. Sport does not and cannot work that way.
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More from @AdamRutherford see all

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Dr Adam Rutherford
@AdamRutherford
The thermodynamics of bullshit: it takes much more effort to refute a claim than to make it, hence the entropy of guff, bullshit or lies increases 1/n
Hence, it requires much more effort to explain why weather and climate are different, or to explain that race does exist but not in terms of biological variance. Or to explain why PGS are not necessarily the most incisive tool for explaining differences between populations. 2/n
It takes no effort to say homosexuality is not natural, or that lobsters explain male dominated social structures, or that IQ only tests IQ performance 3/n
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Dr Adam Rutherford
@AdamRutherford
Dear all, A thread on bad science: The story doing the rounds about the identification of Jack the Ripper via DNA from a shawl is doing the rounds again.
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It is predicated on the publication of this paper
bit.ly/2ULxp2Q
Which is the study first described in 2014 in a book and in the Mail on Sunday.
3/n
Read 16 tweets
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Dr Adam Rutherford
@AdamRutherford
Interesting; as in Hamilton-Zuk, his preposterous and probably dangerous tan is an indicator of lower parasitic load, or is it just Fisherian exaggerated male ornamentation?
He has 5 children from three women, none of whom had further children, so good genes via polyandry is ruled out.
His sons are as dumb as bricks and look like rejects from a Twilight fan film, So Sexy sons hypothesis isn’t a good fit either.
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Alexander J.A Cortes
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@XiXiDu
Genetic differences between human populations: more than meets the eye (link thread):
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