“ Not sure the blogpost supports Gould being innumerate or not understanding PCA.. also, an aside, I doubt the author Hsu would agree with your take here, considering his hero Feynman had an underwhelming IQ relative to his success.”
Actually, here’s Hsu on Gould again:
https://infoproc.blogspot.com/2011/06/high-v-low-m.html?m=1
The author does indeed tackle Feynman’s IQ here, and agrees with me (actually Hsu has informed a large part of my worldview):
https://www.psychologytoday.com/us/blog/finding-the-next-ein...
“ BTW what do you mean by IQ measurement is underpinned by PCA (principal component analysis? or the requisite math?)?”
Principal component analysis. More here, again from Hsu:
https://www.cog-genomics.org/static/pdf/ggoogle.pdf
