The video is part of a series of lectures released by MIT, presented (mostly) by Tadge Dryja, research scientist and creator of Lightning Network.

I wanted to share this video because of how brilliant it is. By explaining the various fork scenarios, Tadge lays out the underlying game theory that drives the Bitcoin peer-to-peer network, and how colluding actors may influence this network in various ways.

He also emphasizes the importance of hash power, and the balance of incentives which exist between nodes that consume blocks, and miners who push competing chains (and their transactions) forward.

The whole MIT series is worth a watch. Tadge is very open and unapologetic about the current flaws within Bitcoin as it stands, and what could be improved (which is refreshing to see). But if I had to pick one video to watch, I would say this is the one.