Other commentators are pointing out your gross flippancy about world capital and whatnot. I will say, when optimizing code, I take every 0.7% improvement I can

Other commentators are pointing out your gross flippancy about world capital and whatnot. I will say, when optimizing code, I take every 0.7% improvement I can get. As the world shifts to optimizing for CO2 emissions, every 0.7% that can be done soon and without capital investment is a no-brainer. The fast ships are likely operating at inefficient speeds, which is only made possible by transporting premium cargo where the increased costs are absorbed by the ultimate higher prices of the goods. In a real sense, the world is paying too much by a psychological need for instant gratification. Note that cargo ships have all sorts of negative externalities beyond CO2 emissions. For example, the studies that are coming out now on the impact of fine particulates... well, I’d short the Diesel engine all the way to $0. So while a carbon tax might be the best global win for all industries, this sounds like one that could be implemented tomorrow and have a real impact.