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I have another question of a somewhat similar nature. Just somewhat !

Why is air travel still so slow? For decades now, flights take the same (large) number of hours to fly direct between 2 points. For example, NYC to London. SF to Boston. Why has there been no innovation in this area of engineering? What is the bottleneck?

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Where can I find the original post?

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I feel like there is sufficient mechanical technology that we should be able to construct something that can transform from 6 seats into 6 beds, or possibly some other ratio, so planes could adapt to what tickets people buy or perhaps shift mid-flight.

When I took a sleeper train in thailand recently, the seats were setup in such a way that you had room for 4 people facing each other (a little tightly in) per spot, or you could turn that into 2 bunkbeds. Then for sleeper tickets you sell them such that each row has only 4 total tickets.

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