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Cake day: June 11th, 2023

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  • ricecake@sh.itjust.workstoScience Memes@mander.xyzPolisci
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    2 months ago

    You are correct. The person you’re replying to misread my set as a fancy way of saying “all natural numbers”, not “all primes”.
    So you’re both right, in that if 1 were a prime, the primes would not work right, and if 1 were not a natural number then those would not work right.

    Using the totient function to define the set of primes is admittedly basically just using it for the fancy symbol I’ll admit, and the better name for where we keep all the primes is the blackboard bold P. 😊








  • Totally agree on the sensitive or decisive topics point, but I include a caveat that what some people call “sharing decisive viewpoints in public”, others call “not hiding their gender/sexual orientation”, and similar things, so it’s not always perfectly clear cut.

    I try to avoid being inflammatory in general, anonymous or not, and I’m not perturbed if people know my city, industry, trade, and vague interests. Basically what you could figure out from a polite conversation while waiting in line.

    I’ve got a lot of code up on GitHub, and some of it is absolute garbage. If an employer judges me poorly for sharing my pile of one-off scripts, or “basic human decency and lack of respect for neo Nazis in a casual setting”, then I frankly probably don’t care to work for them.
    Admittedly, other than a script that automates figuring out which web hosts are hosting hate groups, there’s not much political content in my software.

    I do alright, so my system seems to work.





  • Some blues are reversible, and some aren’t. Some of them do a statistical rearrangement of the data in the area being blurred that’s effectively reversible.

    Think shredding a document. It’s a pain and it might take a minute, but it’s feasible to get the original document back, give or take some overlapping edges and tape.

    Other blurs combine, distort, and alter the image contents such that there’s nothing there to recombine to get the original.

    A motion blur or the typical “fuzzy” blur can be directly reversed for the former, and statistical techniques and AI tools can be used on the later to reconstruct, because the original data is still there, or there enough that you can make guesses based on what’s there and context.
    Pixelating the area does a better job because it actually deletes information as opposed to just smearing it around, but tools can still pick out lines and shapes well enough to make informed guesses.

    Some blurs however create a random noise over the area being blurred, which is then tweaked to fit the context of whatever was being blurred.

    Something like that is impossible to reverse because the information simply is not there.
    It’s like using generative AI to “recover” data cropped from an image. At that point it’s no longer recovery, but creation of possible data that would fit there.

    The tools aren’t magical, they’re still ultimately bound by the rules of information storage.






  • I think you’re reading way to much into things.
    Nine articles is not a “wave” or “trending”, and if you had read any of them they’re essentially non-sensational, explain that the image is notable because of its role in the development of digital imagery, why they’re moving away, and why that’s for the best.

    Jumping from a small number of neutral articles in either explicitly technical or technology adjacent sources to a “wave” of sensationalist agitation targeting older dissatisfied white men is, frankly, really fucking weird.

    With your “I don’t work in this field, why do I need to hear about this” it really feels like your saying anything you don’t care about shouldn’t be reported on, and if it is reported on, it’s because someone must have an ulterior motive.
    It’s been a near standard test image for decades. Deprecating it is a model case for a low stakes info piece if you’re a tech publication. News you’re not interested in isn’t automatically cultural warfare.