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Joined 3 years ago
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Cake day: June 10th, 2023

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  • I’m reading a lot of responses here that seem to rhyme with the “White lives matter!” responses to the BLM movement.

    As was the case then, what seems to be getting missed by those saying this is the context. Italy has a major issue with domestic violence, including spousal murder. From the sound of it, it’s usually women who are the victims. Thus, a new law to target wife abusers specifically.

    There may be some merit to debating whether this is an effective move or not, I’m not up on my research there; but let’s not deny that they see a need, and are attempting to address it.











  • Also for unmanned aircraft, using helium instead of hydrogen is just crazy

    Is it? Hydrogen is about half the mass of helium, but the trick is what you’re displacing to generate lift.

    1 cubic meter of air is around 1.2 kilograms, depending on a variety of factors.

    1 cubic meter of helium is around 0.18 kilograms, displacing the atmosphere to generate about 1.02 kilograms of lift.

    1 cubic meter of hydrogen is around 0.08 kilograms, displacing the atmosphere to generate about 1.12 kilograms of lift, a shade under a 10% increase over helium.

    That can be significant, depending on other engineering constraints; but is it “crazy” different?

    (Numbers will vary with temperature and pressure, back of envelope calculations, etc. etc.)



  • Just went through this with both kids… The word “need” always implies a goal. “I need x (to do y)”. Without context, the goal is generally either survival, or more often, comfort: “I need a drink.” “I need a break.”

    When you’re speaking in the context of doing something, as superglue was, that becomes the implied goal. “I need those recommendations to automatically populate (in order for my wife to be comfortable using this)” is a perfectly valid use of the word “need”.