I haven’t heard that one, but they did like a crossover a year or two back with the Hood Politics podcast I believe that was a multi episode deep dive into the topic. Given how few details I apparently remember, probably worth a re-listen for me too, but you oughta give it a whirl!
I think the idea is that it’s like the Global Seed Vault but for knowledge (and it’s physically close, too). Maintain copies of important things in such a way that they are designed to survive ~any catastrophe.