So, you don't have a complete theory of how the mountain, or gene, causes the personality change. You even agree with me in saying that no one does (as I said e

So, you don't have a complete theory of how the mountain, or gene, causes the personality change. You even agree with me in saying that no one does (as I said earlier). In your words, it's not "fully understood yet". However, you believe that when it is understood, then we will know that genes and mountains do this thing. But how do you know what the conclusion will be, now? Can you make up a possible mechanism of genetic causation? You don't have to prove this actual mechanism is being used, just invent one that could work. I understand the causation up to (for genes) causing more/less of a chemical in the body, larger/smaller muscles, causing defects in the eyes or exceptionally good vision, something like that. But how do you get from there to causing some significant effect in adult personalities? Like causing people to enjoy mountains, be republicans, or consider women bad at business.