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Cake day: May 8th, 2024

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  • Got into 3D-printing a few years back. Intended to print some replacement parts, a few decorations and gadgets, and took care to not waste too much plastic. In the internet, there are pages dedicated to 3d models other people have printed. They were always a good inspiration on what could be done, and even if the model isn’t exactly what you wanted, it was always a functioning prototype to test with.

    Since last year, multicolour printers have gained popularity. They automatically change between 2 different colours, but to make sure nothing of the old colour is left in the system, every time they change it they print out a few grams of waste product.

    It’s a waste indeed if you look at the “poop bucket” of anyone who uses these types of printers. Idc if it’s only the “technically recycleable PLA” they use, I don’t like it. And now I have to manually filter out those models, and they can fill an entire page depending on what’s the new trend right now.







  • Tudsamfa@lemmy.worldtoScience Memes@mander.xyzStatistics
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    2 months ago

    “Who here plans on driving their car today? Show of hands!” … “I recommend getting to know these people, because you are far more likely to die in an car accident caused by a stranger than by someone you know. But also don’t upset them, as you are far more likely to be murdered by someone you know rather than a stranger.”

    “Mr Tourguide, aren’t you supposed to talk about sharks?”



  • I never said that. What I meant is that a behaviour, which benefits a species as a whole but reduces one individual’s fitness, is not evolutionary competitive. It’s evolutionary game theory, like the prisoners dilemma from normal game theory.

    And to determine if some behaviour is such a dilemma, you have to consider costs and benefits of it, which is not at all clear in natural situations. That’s why I said it needs to be studied.

    But I must concede, I sort of assumed what exactly you called an evolutionary advantage. Common homosexuality in penguins or not discriminating against homosexual individuals in penguins have very different analysis here.


  • I’d be cautious with saying evolutionary advantage here.

    I don’t believe the “Gay Uncle hypothesis” any more than the somewhat debunked “Grandmother Hypothesis”, which aimed to explain menopause with biological altruism. Just because we could think of a way in that it might be advantageous for a species doesn’t mean it’s advantageous for an individuals fitness.

    Of course, it can be still an advantage, but we’d only know with more free, uncensored research.





  • Tudsamfa@lemmy.worldtohmmm@lemmy.worldhmmm
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    3 months ago

    This bike lane is on the left side, but the bike lanes in the rest of the city are on the right. Someone then thought the best way to connect them is to have them cross 2 streets to get to the bike path leading to the right, and from there take 2 left turns if they want to go left, which also has a separate lane for right turns - just for the cars, of course, so that is another lane bicycles need to cross.

    So, depending how the traffic lights work, bicycles have to wait up to 5 times to do a simple left turn. The traffic needs to flow after all, and traffic just means car traffic to some city planners.


  • I think that is thinking a bit too narrow. A lot of the stuff we use today might just be our bronze to our successors iron - you can build an unstable society on either. And what we do use up today could still work if used more efficiently - we might not have enough rare metals to give everyone a smartphone in the post-post-apocalypse, but I could see us still launching satellites if only big governments had computers - because they did.


  • We have had Millions of years of (presumably) intelligent Dinosaurs on this planet, but only 200.000 years of mankind were enough to create Civilization IV, the best Strategy game and peak of life as we know it.

    So clearly, Civilization™ is what sets us apart.

    Jokes aside, the thing evolution on earth spend the most time on is getting from single celled life-forms to multicellular life (~2 billion years). If what earth life found difficult is difficult for all, multicellular collaboration is way harder than photosynthesis, which evolved roughly half a billion years after life formed.


  • A filter for sure, but not a great one. Call me optimistic, but I don’t think that will set us back more than 10.000 years. If humanity can survive, society will re-emerge, and we are back here 2-3000 years into the future.

    Is +5°C Earth a good place to be? No. Will the majority of humans die? Absolutely. Will the descendants get to try this society thing again? I believe so.

    On a cosmic scale 10.000 years is just a setback, and cannot be considered a great filter.