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Cake day: July 2nd, 2023

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  • everything you said is true. i just wanted to add something to the suicide point: owning a gun has been tied with an increased risk of suicide. source

    here’s a quote from the link that i think gives a good summary of the problem:

    “Suicide attempts are often impulsive acts, driven by transient life crises,” the authors write. “Most attempts are not fatal, and most people who attempt suicide do not go on to die in a future suicide. Whether a suicide attempt is fatal depends heavily on the lethality of the method used — and firearms are extremely lethal. These facts focus attention on firearm access as a risk factor for suicide especially in the United States, which has a higher prevalence of civilian-owned firearms than any other country and one of the highest rates of suicide by firearm.”



  • that’s not the full story though. according to the NIH, the US government spent over 30 billion dollars on the covid vaccines.

    and this is not unique to the covid vaccine. here’s a source with two particularly damning quotes:

    “Since the 1930s, the National Institutes of Health has invested close to $900 billion in the basic and applied research that formed both the pharmaceutical and biotechnology sectors.”

    and

    A 2018 study on the National Institute of Health’s (NIH) financial contributions to new drug approvals found that the agency “contributed to published research associated with every one of the 210 new drugs approved by the Food and Drug Administration from 2010–2016.” More than $100 billion in NIH funding went toward research that contributed directly or indirectly to the 210 drugs approved during that six-year period.







  • i think it depends on what you mean by “accurately”.

    from the perspective of someone living on the sphere, a geodesic looks like a straight line, in the sense that if you walk along a geodesic you’ll always be facing the “same direction”. (e.g., if you walk across the equator you’ll end up where you started, facing the exact same direction.)

    but you’re right that from the perspective of euclidean geometry, (i.e. if you’re looking at the earth from a satellite), then it’s not a straight line.

    one other thing to note is that you can make the “perspective of someone living on the sphere” thing into a rigorous argument. it’s possible to use some advanced tricks to cook up a definition of something that’s basically like “what someone living on the sphere thinks the derivative is”. and from the perspective of someone on the sphere, the “derivative” of a geodesic is 0. so in this sense, the geodesics do have “constant slope”. but there is a ton of hand waving here since the details are super complicated and messy.

    this definition of the “derivative” that i mentioned is something that turns out to be very important in things like the theory of general relativity, so it’s not entirely just an arbitrary construction. the relevant concepts are “affine connection” and “parallel transport”, and they’re discussed a little bit on the wikipedia page for geodesics.


  • affiliate@lemmy.worldtoMemes@lemmy.mlThe line war has begun
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    1 month ago

    it’s a bit of a “spirit of the law vs letter of the law” kind of thing.

    technically speaking, you can’t have a straight line on a sphere. but, a very important property of straight lines is that they serve as the shortest paths between two points. (i.e., the shortest path between A and B is given by the line from A to B.) while it doesn’t make sense to talk about “straight lines” on a sphere, it does make sense to talk about “shortest paths” on a sphere, and that’s the “spirit of the law” approach.

    the “shortest paths” are called geodesics, and on the sphere, these correspond to the largest circles that can be drawn on the surface of the sphere. (e.g., the equator is a geodesic.)

    i’m not really sure if the line in question is a geodesic, though