The Simulation Gap: Why Crypto Wallet Previews Aren't Promises

As crypto wallets increasingly use transaction simulation to preview user actions, they risk misrepresenting estimates as guarantees. This technical analysis deconstructs multiple simulation layers—from standard Ethereum calls to state-specific overrides—revealing that each has distinct limitations and assumptions. Understanding these boundaries is essential for building wallets that honestly communicate what previews actually predict rather than what users hope will occur.