Gavin Wood, co-founder of Ethereum and founder of Parity Technologies, said in an interview with Babbitt in Shanghai today that PoS can be seen as an advanced version of PoW's consensus mechanism. PoW code is relatively simple, while PoS requires more complex and detailed design. . But in the future, if there is a better consensus mechanism than PoS, Polkadot will definitely replace PoS. At the same time, for Cosmos's dual-coin economic model, he said that if this model is really proven to be effective, Polkadot may also consider such a design.