Just came across something interesting about wallet security that Vitalik's been thinking through. So the idea is basically letting users preview what a transaction will actually do before they commit to it. Sounds simple, but it's kind of a game-changer when you think about it.

The concept is you specify what you're trying to do on-chain, then the system shows you exactly what will happen. You can either confirm or cancel. He's suggesting combining this with spending limits and multi-sig approvals to create this layered approach where low-risk moves are frictionless but anything sketchy gets flagged hard.

What's clever is the focus on intent alignment. Like, the system needs to understand what you actually wanted to do versus what a malicious contract might trick you into doing. Vitalik admits there's no perfect solution here, but the approach would involve multiple overlapping verification methods. Only execute when everything checks out.

This could reshape how Ethereum wallets work fundamentally. Not just about preventing scams, but making the entire user experience more intentional. Could apply across wallets, smart contracts, even operating systems. Worth paying attention to if you care about Ethereum's long-term security model.