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Cake day: 2024年10月19日

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  • Space elevators. I used to be a huge fan but I’ve lost faith in the concept. For one thing, there’s been little progress toward creating the unfathomably long carbon fiber tether - about 35,000 km (22000 mi). Then there’s the tether’s vulnerability to damage or destruction - a fixed target in an unstable world. A break means total failure. We also have no idea how the material would degrade over time. Not that the technology is impossible, I just expect space travel to become cheap enough to make space elevators obsolete long before the tech is there to build them.