Interesting crackpot book
Julian Jaynes, of Princeton University, wrote a fascinating book titled The Origin of Consciousness in the Breakdown of the Bicameral Mind, finding scattered bits of evidence that indicated that we became conscious as our bicameral mind melded—until then, we heard (in what more or less corresponds to our left-brain mind) “voices” (from our right-brain mind), which we obeyed. There’s much more to it than that, and though it’s crackpot (IMHO), it’s interesting crackpot. Some of it is based on the kind of misreading that (and the Classical Daughter will correct me if I’m wrong) led some to speculate that, in Homer’s time, people’s vision responded to different wavelengths of light, hence the ubiquitous “wine-dark sea,” the sea being, as we know, not wine-dark at all. But them someone noticed that the flanks of working oxen were also “wine-dark,” as was the forearm of a fighting man, and realized that perhaps the word meant something like “sparkling from drops of water” or the like.