European. Polite contrarian. Insufferable green. History graduate. I never downvote reasoned opinions and I do not engage with people who downvote mine (which may be why you got no reply). Low-effort comments with vulgarity or snark will also be ignored.

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Joined 3 years ago
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Cake day: June 16th, 2023

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  • Of course the USA could “win” like it won in Baghdad. But what next? Nobody could ever subdue Afghanistan. Vietnam similar. Russia is now struggling against Ukraine.

    A better example. The USSR, with its almost limitless tolerance for casualties, had to come to terms against tiny Finland - coincidentally also an Arctic nation few in number but that knew its environment.

    Important not to underestimate the difficulty of asymmetric warfare against a determined foe combined with a limited tolerance for casualties.

    The USA is (still) a democracy. If there were to be serious ongoing pushback in Greenland, that’s a story that would end just as badly for America as every other time in the last century. Against an accountable government, the motivation of the opponent matters a ton. Hence this news, which I found interesting.





  • all high-speed trains are running on 100% renewable

    Irrelevant to what I said: discounting energy source.

    Trains obviously have much less rolling resistance, as you say (an advantage partly offset by their added weight). But wind resistance is the bigger factor, and trains are usually just faster.

    A train travelling at 350kmh uses 40% more energy than one going at 300kmh. This is why the service speeds usually top out at 300 everywhere, Europe, japan and China.

    Speed really is the decisive factor. The pyramid hints quite well at this.


  • That’s my fantasy too. And I understand it’s roughly the situation in Japan, where urban streets generally do not have parked cars (or sidewalks, alas). It’s because cars are understood to be just another form of private property, to be stored privately. After all, even in the West you don’t just leave your property in a public place, for some reasons it’s only cars. A mind-blowing framing of the problem.



  • Nice. I’ve looked into this question fairly deeply and this seems fairly accurate.

    Two things that people find counter-intuitive (or in the second case prefer not to think about):

    • an intercity bus is usually greener than a high-speed train, even discounting energy source - mainly because speed carries a major efficiency penalty
    • air travel is an unmitigated disaster on the level of personal carbon footprints - there’s basically no way to make it sustainable

  • A private car typically sits empty and unused 95% of the time, with all its embodied energy and materials, blocking up 10 square meters of street that might otherwise contain sidewalk or trees.

    Thought experiment. Imagine a city where all the car owners sold their cars and took taxis instead. I’m pretty sure this has been modeled and the result is always a massive improvement in terms of resources and space.