cormac mac airt, on 29 July 2012 - 06:58 AM, said:
That's not what was said from the quote so it's not really open to reinterpretation. What was said was rather specific, to whit:
Meaning that Homo sapiens direct ancestor, according to McKenna, was Homo erectus. Which is incorrect as both Homo sapiens and Homo neanderthalensis descended from Homo heidelbergensis at some point between 500,000 and 800,000 years BP. Once again, Wiki is NOT your friend.
Except that that doesn't really work either as "anatomically modern humans", meaning physically/structurally the same, are in evidence from c.200,000 BP. There's nothing from either the Omo Kibish or Herto remains to suggest that they were significantly different from what we have now. Which again makes McKenna's 100,000 BP date meaningless.
cormac
I'd be pretty sure McKenna knew erectus was not around at 100,000BP.
That quote is worded a bit wrong, here's another take on it:
In his book Food of the Gods,[22] McKenna proposed that the transformation from humans' early ancestors Homo erectus to the species Homo sapiens mainly had to do with the addition of the mushroom Psilocybe cubensis in its diet - an event which according to his theory took place in about 100,000 BC (this is when he believed that the species diverged from the Homo genus)
He believed the homo sapiens had diverged off at around 100,000BC.
The Omo finds and other early anatomically modern humans are a mix of archaic and modern traits, nor do they display signs of behavioural modernity in general until 50,000BP.

Skhul V - showing the archaic features in early 'anatomically modern humans'.
Around 100,000BP he has stated he thinks homo sapien branched off, which might not be so untrue, if we define homo sapiens as having not only anatomical traits but also the earliest signs of behavioural traits distinguishing that human as true homo sapien ie; modern human in both anatomical AND behavioural traits.
It was a theory whereby the stimulation of the brain advanced at that point to create the evolution he thinks occurred.
The first human species to move out of Africa was Homo erectus, the African variety of which, together with Homo heidelbergensis, is considered to be the immediate ancestor of modern humans
TOGETHER with homo heidelbergensis.
Modern humans probably did evolve around 100,000BP rather than the archaic humans before them termed as anatomically modern humans...
As we saw last time:- Homo erectus
- throughout Africa, Asia, and Europe evolved into, or was replaced by, a fairly variable lot of archaic Homo sapiens that began appearing between about 400,000 and 200,000 BP
- by 130,000 BP, the western European archaic sapiens had become distinctly Neanderthal
- The archaic sapiens made "Middle Paleolithic" tools, most classically represented by the Mousterian tools of the European Neanderthals
- then, modern Homo sapiens evolved, probably first in Africa around 100,000 BP
- the archaic sapiens populations either evolved in the same direction, interbred with, or were replaced by modern Homo sapiens
http://bruceowen.com...ist/3250s06.htm