[unspun]

If this theory is to be credible then all humans must"Think" similarly and equally. That the processes of thought in an Amazonian Indian are on par with that of say Steven Pinker.

I didn't really find him positing a theory so "stongly" as this. I found him more engaged in dismantling false theorizations.

But about some things at least, don't most people agree that we all tend to think similarly? ;-`

[ijcr]

It is easy to throw a grenade and then walk away.

However, it does not explain why a Korean sees a dog as yummy and an American is revolted by the concept.

The concept of one singular human thought process has been around for ages.It is simplistic to lump biological and
hard wired human characteristics such as Greed,Lust,Pride, Envy,Anger,and Sloth (often refered to as the seven deadly sins)as shared thinking.

There is a need to seperate Human Instincts from thinking.
To think is to do(old adage). While we may all share these instincts( and behave in response to them) we do not all do similarly, hence we do not all think similarly.