Isn't this a testable hypothesis? If consciousness spread virally and isn't a natural outgrowth of the physical structure of the brain, then presumably isolated indigenous tribes would still have pre-consciousness mental processes, and that should be detectable somehow. The being said, I'm reading "Proto" By Laura Spinney, and the thing that strikes me is how recently the world's major languages developed. Everyone a…
To your point:
> Isn't this a testable hypothesis? If consciousness spread virally and isn't a natural outgrowth of the physical structure of the brain, then presumably isolated indigenous tribes would still have pre-consciousness mental processes, and that should be detectable somehow.
SSC's article points to a Reddit thread that suggests even folks in the mainstream of culture may undergo a "consciousness transition" as adults: https://www.reddit.com/r/self/comments/3yrw2i/i_never_though...