>>10569279Intervention Theory has sizeable evidence behind it, in my opinion. Not proof, but support for it. Check out Lloyd Pye's presentations and see for yourself. He references ancient mythological records, modern genetic records, anthropological timelines, and much more, putting them all together into a single narrative of our history wherein an advanced ET species came here and made us. Check it out and see what you think.
Terraformer theory, however, which states that a higher intelligence brought the Cambrian Explosion species here from elsewhere, is very different and has no real "evidence" behind it. Just a neat hypothesis.