Ethereum co-founder Vitalik Buterin has proposed the introduction of transaction simulation features to bolster the security and user experience of Ethereum wallets and smart contracts. Announced on the X platform, Buterin suggests that users could specify their intended on-chain operations and then decide to confirm or cancel based on the simulation results. He also advocates for mechanisms like spending limits and multi-signature authorization to align user intent with expected outcomes and risk constraints, reducing the likelihood of high-risk transactions. Buterin acknowledges the complexity of defining user intent, which makes achieving "perfect security" unattainable. He calls for diverse methods to verify user intent to enhance system security. This proposal addresses the security aspect of the "blockchain trilemma," which also includes decentralization and scalability. While recent efforts in the Ethereum ecosystem have focused on decentralization and scalability, Buterin's suggestions aim to strengthen security measures.