I just spent 20min to look for that debate between some of the big players: * the optimistic side: https://medium.com/offchainlabs/optimistic-rollups-the-prese

I just spent 20min to look for that debate between some of the big players: * the optimistic side: https://medium.com/offchainlabs/optimistic-rollups-the-present-and-future-of-ethereum-scaling-60fb9067ae87 https://medium.com/offchainlabs/optimistic-rollups-the-prese... * the zk side: https://blog.polygon.technology/zk-and-the-future-of-ethereum-scaling/ https://blog.polygon.technology/zk-and-the-future-of-ethereu... On one hand you have a complicated protocol that doesn't really use cryptography and that has the user (you) monitor the blockchain for a week to make sure their transfer was processed correctly (otherwise my understanding is that you have to create a fraud proof, send it to the chain, otherwise you will lose your funds). On the other hand you have a cryptographic proof of a few kilobyte that proves that some program correctly validated and applied the state transition of thousands of transactions.