Hi Gilgamesh, and welcome to our site.Except of course that their is no evidence at all that such a thing exists.
If it does exist, millenia of human history proves that it doesn't work.worth a damn.
Please explain the 'evolutionary benefit'.
Please explain any 'evolutionary benefits'.
Thank you.
the evolutionary benefit was merely ability to communicate prior to spoken language, it would have assisted tribes way back during hunter/gatherer days...it would have been a rudimentary communication used probably during hunting etc. You go left, I'll go right it would have allowed them to connect and work as a unit
Also, going way back and examining various societies they have found there are similar archetypes that run through all cultures...
a commonality if you will between everyone