🍉 DrRedOctopus 🐙🍉

  • 9 Posts
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Joined 11 months ago
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Cake day: June 29th, 2025

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  • the questions are the specific impulse of those engines, then Delta-V.

    a mentos and coke can reach about 3m height gayser, therefore initial nozzle velocity is 7.67m/s, and a 2l bottle lasts about 2 seconds. resulting in a ISP of 0.7822 seconds.

    for comparison, the shuttle solid rocket booster has an isp of 250 seconds, a normal liquid rocket engine is about 450 seconds (the more the better).

    plugging in the weights of the Saturn 1, gives a delta V of [drumroll] 18.6 m/s… enough to accelerate a giant rocket to highway speeds.

    can we make it bigger to get to orbit? nope, the rocket equation won’t let you with that specific implied. sorry


  • it’s insane, how automation is a threat. under and sane society it’ll be seen as a good thing. why do those things if we don’t have to… wait, we set up our entire civilization so individual productivity is tied to your inherent right to life? WHY TF DID WE DO THAT??? just so the most unproductive people can cheat the system and live like gods.



  • I miss being naive and thinking “technology will save us”. But technology advancement without social progress only leads to the entrenchment of unjust systems.

    All those tech and infrastructure sectors will improve, but whatever possible quality of life improvement will be compensated by worse socioeconomic divide.

    I’m tempted to tell about a science fiction book where that happens (not with gold asteroids but other tech) I’m currently writing that chapter, although the metaphor in my version is more obvious: Its a generation oNeil cylinder in a multicentury journey, originally set as a solarpunk utopia, it has degraded after a century and now they have heavy industries sapping energy that was meant for lighting and heating. That results in regular frosts and the poor struggling while those who can afford it can get electric heating (sapping more energy). The individualistic solution works for an individual but makes things worse for all and only benefits those wealthy who live in another part of the cylinder that’s unaffected by the energy drain.


  • will there be advantages for daily life if gold is trivially affordable? probably, it’s a good material for many applications. and is extremely rust resistant.

    Coating all exposed metals with gold would be trivial.

    [Skip a few paragraphs of technical world building. ]

    it’ll be an increments tech step without any changes in inequality and a minor change in the public quality of life.