>As of July 2016, the world had a capacity of 20 million standard shipping containers. And if we could pack passengers into shipping containers, or even house

>As of July 2016, the world had a capacity of 20 million standard shipping containers. And if we could pack passengers into shipping containers, or even house them on freighters without refitting, we'd be great. But we can't, because people don't want to go from flying on airplanes to sitting on the floor of a cargo hold. So the build outs are still necessary. We need new ships. >What kind of pollution matters, and where it's emitted also matters. More Sulfur, less CO2, etc The goal is to cut down on all pollution. >That's not the only option: battery weight is not an issue in ships; their consumption per tonne-kilometer is so low that solar can contribute a lot, et cetera. It's still probably most efficient to just burn a clean fuel and then sequester the CO2. All of which calls for even more build outs and refitting, in addition to even more pollution expended in pursuance of those activities. >Letting perfect be the enemy of the good is one of the big reasons holding the world back Which is exactly the reason that the very next line designates such a solution, "completely unworkable in today's world."