https://arxiv.org/abs/1606.00821
Which really just breaks down consciousness potentially being a byproduct of having a drastically higher number of neurological connections than lesser developed animal brains.
So combining the two, the growing brain, caused by an increase in size of the visual cortex to detect snake patterns, increased the number of neurological connections and as a result the brain gradually became consciously aware. That’s just one theory that I used.
And I 100% agree it’s okay to say that we don’t know, we don’t. And I don’t! But that won’t stop me from thinking about it like, a lot.
Edit: spelling