Stop trying to be slippery and answer the question. In your opinion, does the wave-function exist as part of reality in nature? All you have told me so far is, and The only answer I can gather is that you have no idea. But I don't know what you mean when you say that your understanding of the wave-function is not a problem (which means that you do understand what it is). That's called being slippery. In any event, I don't think that the wave-function of the human brain is the soul, per se. I think the wave-function of the brain is an interface that allows the soul to connect with the body. That is my view.