Interesting stuff.
Zeihan is a little smug, and he likes to make bold statements because he knows it will make him money in the end, and he seems to be pretty self-important. But, the topics were interesting, and it was a worthwhile listen, and his takes on the future are as valid as anyone else's, and perhaps a bit better than most. His point about the decrease in US violent crime being due to the US gangs being taken out by Mexican cartels was something I'd never heard before...sounded a bit crazy, but who knows.
I usually run outside, sans earbuds. But, you just may be getting me interested in this podcast thing.