Well, unexpectedly, I think Worldcoin focuses on the digital world, as it's trying to be a digital currency. The problem is a real one, lookup "sybil attacks",

Well, unexpectedly, I think Worldcoin focuses on the digital world, as it's trying to be a digital currency. The problem is a real one, lookup "sybil attacks", which is what I think Worldcoin is trying to defend against.