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Joined 3 years ago
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Cake day: June 12th, 2023

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  • There are lots of claims going around, but the physics just isn’t there. Battery storage density isn’t high enough currently (and doesn’t look to be close) to support large planes. It’s the same problem as with 18 wheelers. The larger the vehicle, the battery size increases superlinearly, not linearly. Because adding in battery storage increases the weight required to carry the vehicle, thus increasing the battery storage needs, thus … and so on. With liquid fuel, the weight is variable based on the passengers, and the weight drops as the flight continues, thus increasing fuel efficiency the more weight is lost.






  • The efficiency doesn’t matter (to a point of manufacturing solar cells, or wind turbines, or whatever your equipment is for your renewable energy source). If all of the gasoline is generated from the air using renewable energy, it could take 100x the energy and still be completely carbon neutral. Carbon neutrality is based on the amount of excess carbon added to the air. If no carbon is added then by definition it’s carbon neutral.

    Porsche already has a factory in Chile that is doing this exact same thing at a much larger scale.


  • I agree that they can be a hobby. Like you might speed walk in races or something. But that’s the exception. I believe what OP is trying to say is that some things have been transformed from being human into a skill that people are expected to be good at to participate in. If you’re not good at singing, people don’t want to hear it. If you’re not good at dancing, people don’t want to see it. Etc.