The Ever Given has been freed from the Suez Canal. But the whole situation was indicative of a broader issue in global supply chains: increasingly large ships are contributing to logistical bottlenecks. This was true long before the latest issue on the Suez. On the latest episode of Odd Lots, we speak with economist and historian Marc Levinson, the author of the book The Box, to discuss the rise of extremely large ships and the stress they place on ports, canals, and other parts of the global trading infrastructure.