(…also, i think that’s some really bad french! (*^_^*) )
seriously, tho. this is not me returning to blogging. sorry! i think i need another week or so of r&r.
but, i have been binge watching a lot of netflix shows/youtube videos, and i thought i’d share one with you: a bbc horizon documentary from 2011 — Are We Still Evolving? — hosted by one dr. alice roberts.
for the first ten or fifteen minutes, you might feel like poking out your eyeballs, but the show does get better and quite adequately explains rapid evolution, recent human evolution, and even — *gasp* — human biodiversity, albeit only such “nonthreatening” aspects of hbd like lactase persistence and high-altitude adaptations. still, it’s pretty cool that the show goes there at all.
of course roberts gives behavioral genetics a wiiiiiide berth. in fact she doesn’t even mention biological/genetic explanations for behavioral traits at all — until near to the end when she talks to the very frank dr. jeffrey steinberg about genetic engineering and intelligence briefly comes up. oops!
pay close attention to what stephen stearns has to say at ca. 47:45:
“Well I think what is very probably going on is that selection is moving a population up and down all the time. It goes off in a certain direction for a while, and then it goes back in the other direction. It’s only if you get a significant change in the environment that it will then continuously go in a new direction.”
in other words, the average frequencies of genes in populations matter, and those frequencies can vary over time depending up the selection pressures.
k. that’s all i’ve got for you. back to my la-z-boy. enjoy! (^_^) :
(note: comments do not require an email. this is not the pipe you’re looking for.)