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Cake day: July 1st, 2023

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  • Donkter@lemmy.world
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    toScience Memes@mander.xyzIrrational
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    8 days ago

    Not to reiterate what other people have said here. But you can make an object 1 meter long by defining that object as 1 meter (hell, you don’t have to, but you can define 1 meter as the length that light travels in a specific amount of time or something silly). Then, to create something two meters long, you can have two of those one-meter lengths. To make something π meters long, you would need infinite precision, that is not true for 1 meter or even 1/3 as you mention later in this thread.

    There is no way to divide anything into exactly π length. There is an easy way to divide something into a number that can be expressed as a fraction, such as 1/3, or any fraction you care to come up with, even if it can be represented as .3 repeating.


  • Donkter@lemmy.world
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    10 days ago

    I mean, you only need 39 digits of pi to calculate the circumference of a circle with a diameter the size of the universe to the width of a hydrogen atom. So no matter how detailed you get it’s impossible to determine if a circles circumference is anywhere close to exactly pi.

    To ops point, you could set up your thing theoretically and we can math out that it should be pi. But we could not make that object.




  • Donkter@lemmy.world
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    toScience Memes@mander.xyzElectrons
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    1 month ago

    Sorry, I see how my post could have read. I was agreeing with you. I just wanted to add on because I think it’s so cool that the only thing we’ve ever really been able to do with all our scientific progress and applied science is establish that when we see one thing happening we can be pretty sure that it usually leads to this other thing and we don’t really know why.


  • Donkter@lemmy.world
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    toScience Memes@mander.xyzElectrons
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    1 month ago

    Physics is just us categorizing the relationships between different observed phenomena. “Explanations” are fun, and many can be true at certain scales, but getting deeper into any specific phenomenon is just a rabbit hole that leads to more and more “we don’t know why it does that, it just does and it works in our models.”








  • I think it’s more like if you really dig into what most religions believe, like in their leadership. It’s well accepted that if you scrutinize it at all god is the unknowable all so in a way he’s father son and holy Spirit and that’s easy to communicate to the masses. But the truth is that any conception of a deity is so abstract that it shouldn’t really be worth communicating.




  • Yes, in that way. Scientists can’t say something is true for sure. You can argue (correctly) that gravity has more evidence backing it up. It’s the accepted theory that gravity works the way it does because it lines up with every observation made involving it.

    In the same exact way, psylocybin being produced by mushrooms to deter predators (certain insects in particular) comports with every observation made about it and explained with the same theories of evolution that lead to similar results with organisms producing chemicals all over the animal kingdom. Like gravity, it’s bad science to say it like an absolute fact, but it’s likely based on all available data.