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> This makes direct comparisons to early-20th-century airships difficult,

This is exactly my point. It's unwise to assume they are worse. If anything, to a first estimation, you can have the passenger cabin disconnect and glide to a controlled crash as we do for planes in certain scenarios.

I'm not seeing how a slower moving, less energetic vehicle is less safe. It's a complete subversion of engineering acumen.



Lots of energy stored in contained hydrogen, that's before counting the fuel.




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