PANews June 20 news, Ethereum co-founder Vitalik Buterin said on the X platform that synchronous atomic composability is overestimated. In fact, we should pay more attention to some specific cross-L2 problems that may be encountered now or in the future, and if properly solved, can bring a more seamless experience. For me, the two most prominent problems are as follows:

• I have tokens on Optimism but I want to pay Bob who is only on Arbitrum.

• I have coins on Taiko and I want to use a dapp on Polygon, so I need to send the coins to Polygon to use that dapp.

These are not advanced technical problems that can be easily solved by solving synchronization issues. Instead, they are primarily user experience problems that can be solved by:

1. Widespread adoption of the ERC-3770 standard, which includes chain information as part of the address, so that the address once again becomes a complete "how to pay me" identifier.

(ii) Introducing cross-L2 transaction protocols (such as ERC-7683) to enable users to perform cross-chain transactions programmatically without having to worry about which intermediaries to trust or which APIs to connect to.

(iii) Wallet integration makes cross-L2 sending simple. Users only need to enter the recipient’s ERC-3770 address into the same text box as daily sending.

Of course, solving these technical problems can indeed greatly improve efficiency, especially by making the cross-chain swap market more friendly to liquidity providers and reducing withdrawal times from 1 week to 1 hour to 1 time slot. But even so, there are still a lot of untapped potential gains that do not rely on achieving synchronicity.