I was really hoping that by 'interfere with our evolution' Scott meant that the Engineers just tossed an asteroid our way every now and again - something that could fit into what we know about the history of our planet - but mental and physical upgrades? This is Von Daniken to the god-damned letter (the guy who said that bananas were given to us by alien gods).
Interviewer: That leads us to ask if all your writing is a put-on. Are you, as one writer suggested, 'the most brilliant satirist in German literature for a century'?
Von Daniken: The answer is yes and no. We have a wonderful term in German: jein. It's a combination of ja and nein, yes and no. In some part, absolutely not; I mean what I say seriously. In other ways, I mean to make people laugh.
Interviewer: Well, you've succeeded in both aims.