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Joined 11 months ago
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Cake day: August 13th, 2023

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  • Sadbutdru@sopuli.xyztomemes@lemmy.worldLifehack
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    1 month ago

    What age are kids in ‘pre-k’? I’m imagining like 3-4 years old? I wouldn’t be surprised at that working with some kids that age. Not saying I think the story is true necessarily, but just that young kids are very trusting, don’t always put together information they get in different settings, and don’t really discuss weekend plans with each other much.






  • Thank you for bothering to rant on your phone despite the fact that it sucks.

    I am a middle aged engineering student (undergrad) with two young daughters (6 and 8), so many of the things you refer to are on my mind a lot.

    In my country (UK) the number of male teachers/carers is strongly proportional to the age of the student. Nursery staff : predominantly women Primary school staff: maybe a few men as main teachers Secondary school: is it 50/50? or still more like 70/30? (I dunno, it’s a long time since I was there, and my kids aren’t there yet)

    Anyway, it’s easy to have young boys, especially if (their father works away, or is otherwise distant from the family), get up to the age of being aware of Andrew Tate with very few male role models.







  • I’ve never seen it myself, but my wife spent most of her childhood/teenage years in Shetland, and apparently up there, back then, Smirnoff ice was the drink of choice for hard working middle aged men. We’re talking about a bunch of islands where the main employment is offshore fishing and the oil & gas industry, and where they’re very proud of their Viking heritage. (Image search Jarl squad to see what I mean, those guys who are picked for the squad will grow their beards all year to look the part)



  • I guess I was imagining it with the walls torn out as well, but you’re right the op (of this comment chain) said top and bottom broken. If the walls are somehow firmly fixed forever no matter how much force they experience, and are not subject to thermal degradation, then we have a square pipe with 3m sides and infinite length. If the walls break down then it’s also infinite diameter.

    In terms of modelling it there’s a FOSS option openfoam.org but I don’t know how to use it and don’t have time to mess about with it right now.


  • It’s a really interesting question, I would love it if someone who understands this kind of physics properly would chime in!

    By my understanding of Reynolds number etc, the faster they go, the more turbulent the flow, so the rocks would be constantly hitting against each other sideways, and surely grind to dust in the constantly accelerating scenario.

    But maybe the infinite (looped) nature of this ‘dimension’ means that this logic doesn’t apply. What would even be the ‘characteristic length’? Are we thinking about established flow at the centre of an infinitely wide pipe? Am I wrong to think of constantly accelerating rocks with air in between as a type of fluid flow?


  • I don’t think the drag force due to air would work the same in a system with such a high concentration of rocks. It’s not like one object falling through undisturbed fluid, which then has to get out of the way, in this case the air would gradually start to move along with the rocks.

    This might be better modelled as turbulent flow of a mixed solid/air suspension. But there’s no ‘edges’ to the flow due to the looped dimension, so the viscous forces are pretty uniform… There would still be a terminal velocity, but much much higher than a rock falling through an atmosphere

    Also I imagine the rocks would quickly grind themselves to very fine dust, once they pick up a bit of kinetic energy, so then it would behave more like a fluid with uniform density… Could it even end up as laminar flow?


  • Look into lacto fermentation (home made pickles like real sauerkraut).

    Basically make sure your jar is as clean as possible; chop up a little bit of cabbage, carrots, cauliflower, broccoli (any or all, this is just an easy beginner list, the possibilities are endless); jam it down in the jar leaving a good gap at the top, and packing it in to leave as little air as possible; top up with clean, salty water so the veggies are covered (not crazy loads of salt, but the water should taste like between blood and sea water) (can also use a weight to keep the veg submerged if necessary, like a clean glass with water in); cover, leave at room temp a few weeks; enjoy a delicious and healthy food that humans have maybe been doing since prehistory. I was going to say how it works, but ran out of time, look it up!



  • It’s not just you, it’s much safer to read disturbing content than watch it on TV, it has something to do with how your mind forms memories. I think while reading your mind will on some level make up pictures to go with it, but only has access to the libraries of what you can already imagine. So if you have nightmares about it later or whatever it can still be challenging, but it’s hard to get as traumatised as you can by seeing images on TV/film or irl. My source for this is something my wife read while we were researching ways to help our little girl, who gets freaked out by certain things on TV very easily. It seems to hold true for her at least.