One of the cable channels had a long show about Ardi the other day. Interesting to see scientists who are so sure about something, to the point at times of smugness, discover they have been wrong. I do credit them with not trying to manipulate what they find into a foregone conclusion. At least in this case.
I'm more of a fan of adaptation rather than evolution. Evolution, to me, means something new comes from something old. I don't think that's been proven.
As for modern human size, it's because we got to eat all the tasty red meat, mashed potatoes and real gravy and other stuff cooked in lard and butter. Since the liberals have come along and are requiring by federal law to make us eat seeds and stems upon pain of imprisonment, we'll be short again in a hundred years.
As for me, I like the old Jewish adage; Man plans and G-d laughs.