"Hey guys, I've been doing some digging into the Delphi Protocol, and I gotta say it's got me both intrigued and confused. From what I've gathered, Delphi seems to be a proof-of-stake consensus algorithm that's trying to tackle the scalability issues in Ethereum, but I'm not entirely sure how it differs from other protocols like sharding or proof-of-authority. Anyone else have some insights or experience with Delphi?"