A mistrial in the United States v. Peraire-Bueno case underscores the difficulties juries face in understanding decentralized finance (DeFi) systems. The case involved allegations against the Peraire-Bueno brothers, accused of using MEV sandwich bots to illicitly earn $25 million. Despite charges of wire fraud and money laundering, the jury could not reach a verdict, citing confusion over the technical and legal aspects of the case. The defense maintained that the brothers operated within the rules of Ethereum's neutral code. The trial concluded with the jury expressing significant stress and confusion, highlighting the need for clearer explanations of DeFi in legal contexts.