certainly forces would account for some culture's gods. But the Greeks? I don't know... There was a time when the conscious world was etheric--not so dense, physical, gross. Many of the mythical heroes and villains are likely from that time--or "state". I'm sure it's true with the Egyptian pantheon--absolutely sure--and the Greeks may have had their own version of all that went down in Atlantis before they blew it. We'll know these answers some day, or rather we will grow into them, a little at a time.