Ethereum in theory is often quite different than Ethereum in reality. In this talk, we dive into the fascinating and often surprising world of how the chain actually operates on a moment-to-moment basis. Data-driven insights will illuminate multiple mysterious topics including private transactions, MEV refunds, L2 gas estimation, stuck wallets, and more. This fast-paced and thought-provoking talk will give you a new appreciation for the inner workings of the Ethereum network.