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Cake day: April 13th, 2024

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  • It’s slightly less stupid than data centers in space I suppose. But I still find it pretty weird.

    You will have to be tethered to land anyway. Properly high bandwidth networking as you would usually see to connect a data center (on the order of a dozen terabits per second) only exists through fiber optic cables. I’m sure of this point, because optical networking is my day-job, though we only run 400 Gbit/s links on the fastest edges since we’re a small national network.

    As for power, well there are 80 MW ship engines (e.g. Wärtsilä-Sulzer RT-flex96C, which has even been built in Korea under license before), so it’s not impossible I suppose. But if you are tethered, then the country you’re tethered to will probably forbid you from burning bunker fuel for 80 MW on its coast. At which point you’d be reduced to running clean diesel or something. That I expect would make the power more costly than just tethering to an electric grid

    So now we have a big barge rather than a ship. What do you really save then? I guess the price of the land? And you gain access to copious amounts of saltwater, so you can do closed loop cooling with freshwater, and do the secondary heat exchange to the ocean. But you could do that by building on the coast too. Okay I guess you might gain tsunami security over a coastal building.

    If this is a real proposal why don’t they tell us the material advantages they expect, rather than making us guess?



  • Well there is no forced air. There isn’t really any variables to have anyone look at. Short of sawing a hole in a wall, door or window.

    According to this calculater:

    • 400 ppm CO₂ in air would be about 0.72 g / m³
    • 3000 ppm CO₂ in air would be about 5.40 g / m³

    The room is about 20 m³ in volume. So in total that’s 14.4 g to 108 g in a night. Ignoring any that diffuses under the door into the hallway, this would imply I breathe out 93.6 g of CO₂ in 8 h at rest.

    A common number I see online for adult humans is 1kg per day. Makes sense that a significantly higher than proportional part of that is during waking hours, so I expect quit a bit less than 300g at night. Seems pretty plausible to me all-in-all.














  • It was only the German position against the American trench gun in WW1, but never wide agreement:

    On September 15, 1918, the German government officially protested the use of the shotgun in a note verbale—an unsigned diplomatic note—transmitted to the Spanish Embassy in Berlin, then to the Swiss Embassy, and eventually to the American legation in Berne, Switzerland. The note asserted that the use of shotguns by U.S. forces violated Article 23(e) of the 1899 and 1907 Hague Conventions and warned that any American captured with a shotgun or shotgun ammunition would be executed.
    […]
    In his formal response to Germany’s protest, Secretary of State Lansing maintained that the shotgun the army used could not be the subject of “legitimate or reasonable protest” under the Hague Conventions.
    […]
    In the 100 years since the protest, the U.S. government’s position with respect to the use of shotguns in wartime has never wavered. U.S. military forces used shotguns in World War II, the Korean War, the Vietnam War, and even in post-invasion Iraq (to clear out suspected insurgent hideouts in house-to-house fighting).

    Source