I rely on Move’s linear resources as the first-class safety mechanism: design assets as resources, make vaults/escrows the canonical holders, and expose small, well-documented entrypoints that move resources explicitly. Composability requires thoughtful choreography (returns, capabilities, two-phase protocols) and accepting trade-offs: you gain safety at the cost of extra protocol plumbing and sometimes higher transaction complexity. With disciplined patterns (vaults, capabilities, versioned managers, stable event schemas), I can build highly safe, composable, and auditable asset flows in Move that prevent double-spend while still integrating cleanly with complex DeFi applications.