That's true, but of course this is a much slower rate of improvement (30 years to 2x) than the growth of air travel, and has slowed in recent years[1] since sea

That's true, but of course this is a much slower rate of improvement (30 years to 2x) than the growth of air travel, and has slowed in recent years[1] since seat density and seatu utilization can't be increased much more without radical approaches like sedating people and stacking them like cargo. [1] https://www.mckinsey.com/industries/aerospace-and-defense/our-insights/future-air-mobility-blog/fuel-efficiency-why-airlines-need-to-switch-to-more-ambitious-measures https://www.mckinsey.com/industries/aerospace-and-defense/ou...