alt Hacker NewsI would argue that parasites only became ubiquitous when we abandoned our hunter gatherers way of life and settled into agricultural communities of larger scale (something relatively recent when compared to human evolution).
So, I doubt that immune system theory, since for most of mankind’s existence, they were not part of our life.
Your argument is total nonsense. Parasites are ubiquitous in all animals, and plants, right now, today. When did they abandon their hunter-gatherer way of life?
> for most of mankind’s existence, [parasites] were not part of our life.
This is not something you should have been able to say with a straight face. It proves nothing other than that nobody should ever take you seriously.