Guys if you know about the Fermi Paradox, I've always wondered if evolution itself IS the GREAT FILTER.
Sounds bonkers, but that's kind of what Weinstein is saying. It may be that all intelligent civilizations end up wiping themselves out once a certain level of tecnological advancement is achieved. That the mechanism that drives that destruction is our own evolutionary biological make-up in the form of 'them and us', 'out' group and 'in' group mistrust and competition.
NB he also states that a memetic virus must have and does have some utility to the individual that carries it in the form of an advantage to its descendent. I disagree. We know there is NO utility for the descendent of the JW meme carrier...no further education worsens the situation for the descendent of a dub, not to mention death due to the blood doctrine may result in zero descendents at all.