I believe blockchain tech has the potential to change the world. With that said, I do have some burning questions: 1. Can there be consensus mechanisms that ar

I believe blockchain tech has the potential to change the world. With that said, I do have some burning questions: 1. Can there be consensus mechanisms that are environmentally sustainable? Does PoS work well? We have so many "new" blockchains with "new" consensus mechanisms but not enough information on the tradeoffs among them. 2. Do we actually need blockchain for anything other than finance? Can't we use p2p for things like governance? Can't we achieve a similar level of trust using traditional p2p tech?