this line got me:
under what conditions do you believe the civilization you're living under will collapse? [...] Oh, you just haven't made that list yet? [...] Or you could take the question from the other side and list the conditions that are necessary for your civilization to continue to exist. That's an interesting list too.
I've always dismissed collapse talk as "batshit crazy" as the author says. but he raises good points here. maybe I'm not batshit crazy enough.