No, you need to know Dijkstra's algorithm in order to tinker with an OS. /s

Definitely, but those people generally have access to the Internet. Modern Android security isn't what people used to jailbreak 30 years ago before the internet.

The person inventing the jailbreak method is typically "classically trained" in CS, notable exceptions like Geohot.

Yeah, we learned it as kids at my primary school. Forums and people there will help a lot if you ask nicely. I guess North Koreans have to learn it from other people directly, though... that's probably much harder. Cubans have huge data libraries shared on USB flashdrives, I wonder if North Koreans have it too.