So S1 of Westworld was based heavily around the theory of the bicameral mind. I listened to a podcast the other day about it, it's a 2 parter, pretty long, about 2:45 in total. The podcast is called Stuff To Blow Your Mind, I recommend it in general. Here's
Part 1 and
Part 2. Click "Share" on the Megaphone thing to get a download link.
Very briefly, the idea is that rather than having consciousness the way we do, where we can examine our own thoughts (called "metacognition"), early man was instructed by a "voice from God" which originated in their own mind. It sounds crazy when put very briefly like that, but listen to the episode or read a bit about it. I don't buy the theory in its entirety, but I think there's some truth buried in there. Mindfulness meditation could basically be described as practising being conscious, and we know from research that mindfulness can cause physical changes in the brain. So the idea is that consciousness as we experience it might not be the only mode of being. It might be that it's like the English language, or our ideas around morals, which kind of feel innate to us because they're so ingrained, but are in fact cultural inventions. Anyway, it's interesting to think about.