For smart contracts to interact with one another, such as a user swapping a token with a different one, messages are sent to each of the smart contracts to update their list of internal variables. The result is a complex balancing act. Ensuring that all interactions with the smart contract are handled correctly falls entirely on the DeFi developer. Since there are no innate guardrails built into Solidity and the Ethereum Virtual Machine (EVM), DeFi developers must design and implement all the...
