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Cake day: June 26th, 2023

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  • I didn’t really say AI bad,

    Implying GenAi gives wrong answers isn’t saying AI bad?

    If you ask AI the same question twice you get 2 answers, different AIs give different responses, different prompts, different people, different geography.

    That’s true of people too, and we trust them to do all sorts of things. Ask 20 people what happens after you die, how many answers are you getting? Not just that ask any technical question, ask 4 beekeepers the best way to do a thing and you’ll get 5 answers.

    GenAI is a tool, if you try use it to hammer in nails you’re gonna have a bad time. Don’t try use it to hammer in nails.

    It turns out wrote answers to wrote questions is something it does fairly well, and it’s still getting better. That’s good, as a society we’ve moved past wrote answers to wrote questions. We should now prepre kids for the society they are going to grow up in, one with GenAI. Critical thinking is something it does fairly poorly, critical thinking is something we do fairly poorly, let’s teach that.

    Beyond academics, shitty throwaway art is something it can also do fairly well. Just want an image use GenAi, want a master piece get a human. You already do this, how many of your clothes are handmade? Used a milliner recently? The Luddites taught us a lesson, attacking looms don’t work.

    I hope I was the last generation to spend hours on long division with quotes of “you won’t always have access to a calculator”. Those that go into fields where long division may be useful should learn it, the rest of us have calculators.


  • Nah I grew up with the “you won’t always have a calculator in your pocket” crowd.

    If AI gets everything wrong then students using it to offload their thinking will get failing grades. AI getting everything wrong is a self solving problem.

    But sure, attack the person, not the argument. I’m sure we’ll have a well reasoned discussion.


    The AI bad crowd are really tripping up the capitalism bad crowd. I don’t know what to do about it. I don’t want them stop, they’re hilarious:

    The post complaining that GenAI is used for CSAM, tools used for CSAM is bad, and the people that use those tools are bad people. The tool used to complain about AI: the internet!!! The internet, famously absent of CSAM.

    The constant hyperbole is funny. Not so much the witch hunts. We can all see the post, students using AI to get through classes means AI can get their questions right. The hyperbole is funny.

    Accusing anything and everything of being AI is pretty shitty though, knock it off.

    But, they do distract from genuine concerns about how capitalism is using tools, any tools, to concentrate wealth. The tools are tools, it’s the capitalism that’s the problem.

    I assume everyone here is wearing cloth made on a loom. The Luddites taught us that attacking the tool (the loom in that case, GenAI in this one) doesn’t work.











  • That cutter is fucking art. The blades we ran had a ceramic core. Then the wax mould over the ceramic. Lose the wax, cast, then beat the shit out of it till the ceramic comes out the blade, now there are cooling channels built into the cast. Complex geometries too.

    I was asking why the blades needed a ceramic coating before going into the turbine. Surely we could just heat treat the blades to whatever hardness required.

    I was then informed that inside turbines it’s so hot the Hydrocarbons split up to free Hydrogen ions and the left over. The ceramic is there because it’s a highly acidic environment.

    Actually that story is my go to “how to mentor story”. I asked why we coated the blades in ceramics. The engineer told me it was really hot in there and just waited for me to twig. I didn’t, then he said it was so hot hydrocarbons break up into free hydrogen and the rest, and then waited. Then I caught on, I have no doubt if I hadn’t then he would have said “free Hydrogen is the literal definition of an acid” and waited. Then “Acid eats metals like titanium alloys” wait. “Then Acid doesn’t eat ceramics” wait. I genuinely try to lead people to answers that way just because the way he made my dumbass feel like the smartest tool in the room. Actually, I asked why we pre finished the blades to near mirrors just to acid etch them dull again, and was told it was for the ceramic coating.




  • Fedegenerate@lemmynsfw.comtoLemmy Shitpost@lemmy.worldgenius
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    10 days ago

    Just a Lemmy shitpost comment, don’t think about it too hard Sure fine sand and a runny plaster, ceramic capture detail. But you still bulk it out with rougher stuff to give the mold heft.

    Maybe not cement. But I also wouldn’t recommend doing back yard casting for Life critical parts if you’re asking what your detail capturing materials should be and what your bulking out materials should be.


  • Fedegenerate@lemmynsfw.comtoLemmy Shitpost@lemmy.worldgenius
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    10 days ago

    Those orphans aren’t orphans any more… Progress.

    Real talk I cast turbine blades for IGT and Aerospace (not an engineer, just a floor worker). It was my impression that inside those turbines is an incredibly hostile environment (hot, acidic, g-forces), and still we cast them. We did some single crystal stuff for the really demanding parts. Is cast metal really that flawed?



  • Fedegenerate@lemmynsfw.comtoLemmy Shitpost@lemmy.worldgenius
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    10 days ago

    3d print part, with added shrinkage factor Finish 3d printed part. Cast the print in cement. Burn the plastic out the new mold. Fill mold with the alloy of your choice. Pre-finish, finish metal part. Congrats, many 1000s spent on furnace materials for a 1.5k part but a new understanding for lost wax casting.

    3d printing is the king of prototyping. Just print the part with sprues and all. Do a one off, write SOPs, prepare for full production. Profit.


  • I’m fine with people paying for the Just-Works™.

    I’ve just ventured into DosBox stuff, starting with pre installed game folders (best case scenario). Just mount the .7z into dosbox and… Wait, unarchive it, make it a .zip and… Wait, just unzip it and remake the folder structure to match the .cfg, rezip and… Wait, unzip and re-write some of the setting in the .cfg, re-zip and… Wait, mouse support on a touch screen, why is the keyboard unresponsive?

    Tinkering is fun, but I just wanted to play fallout 1. Romm just added dos support. I was elated. But all my games are .7z. and the 2 I tried (FO1 and a 1-0 soccer, it was first on the list) both didn’t fire up, fallout 1 required tinkering to fire up in a DosBox instance. A fun project, I wasn’t gaming though.