Vitalik Buterin suggests using features like 'transaction simulation' to enhance Ethereum wallet and smart contract security and user experience. Key points include: users first specify their on-chain intent, then review the simulated transaction outcome before clicking 'OK' or 'Cancel'; this can be combined with spending limits and multi-signature approvals to ensure alignment between intent, expected outcomes, and risk limits; the goal is to make low-risk operations easier and high-risk operations harder. Defining user intent is extremely complex, and there’s no perfect security solution. A good approach requires users to specify their intent through multiple overlapping methods, with the system executing only when there’s consistency. Both security and user experience revolve around user intent, applicable to wallets, smart contracts, operating systems, and hardware. (Cointelegraph) https://www.(wublock123.com)/index.php?m=content&c=index&a=show&catid=6&id=57058