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Cake day: June 14th, 2023

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  • This video is very long and entertaining and there’s a lot of evidence of the effort he put into it. The one real criticism I have is that it seems like he didn’t do a lot of research on what foods work well with freeze drying, preferring to do his own experiments and getting gnarly results on basically everything that isn’t already a well-known freeze dried product.

    Personally I think one of the most useful things to freeze dry would be fresh, home grown herbs. Another big one is homemade soups and stocks.

    As for the usefulness of freeze dried food? The big one he missed is camping and hiking. Frozen foods just aren’t going to cut it when you’re away from electricity for a week or more. You need lightweight non perishable food and for that nothing beats freeze dried. Just need to get some water from a lake or river!



  • The harder thing to convey is the full dimensionality of it. With the rubber sheet (or trampoline) you can show a small ball orbiting around a larger one but only in a single plane (around the “equator” of the large ball). However in reality you can orbit in any direction you like and many satellites actually orbit over the poles. Trying to show that with a small model seems extremely difficult!

    Furthermore, most children are raised on the idea that gravity is pulling them down. They intuitively understand the idea that when they climb a ladder and drop a ball from the top, the earth pulls the ball down. General relativity tells us that this is not happening at all! That there us nothing pulling us down whatsoever. I have yet to see anyone provide a lay person GR explanation for the ladder problem.


  • Oh because that incorrect analogy is the most common “lay person” analogy for describing gravitational curvature of spacetime. The most common reply from children is that it’s the earth’s gravity pulling down on the bowling ball so that the trampoline demonstration wouldn’t work in space.

    Also the trampoline analogy doesn’t show us how gravitational lensing works, nor does it even touch how different gravitational reference frames affect the passage of time (GR generalizes special relativity, after all).









  • chonglibloodsport@lemmy.worldtoMemes@lemmy.mlCapitalist logix
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    2 months ago

    You can see it all play out in a microcosm on reality shows like Survivor. People cooperate and compete. They cooperate TO compete. They cooperate when it benefits them the most, and betray each other when they think they’re most likely to get away with it. Some people are more trustworthy than others. Some are extremely likely to betray, but then they struggle to benefit from cooperation.

    Groups of people engaged in a kind of eusocial super cooperation are very rare and tend to be fairly small. They also tend to act the most like a clique; being highly discriminatory against the outgroup.




  • Consciousness is not necessary for illusions. Illusions are products of the senses and we know that unconscious things are subject to them. For example a radar glitch can produce an illusion of an object that isn’t really there. This occurs whether or not the radar operator is actually present in front of the radar screen, so it’s not an illusion of consciousness.

    I also think it’s possible to have illusions about whether one is conscious or not. I have personally had fever dreams and found myself in a state where I was not sure whether I was asleep or awake. Similar things can be experienced under the effects of certain drugs, while other drugs can temporarily obliterate one’s entire sense of reality.

    One thing we have established somewhat firmly is that the belief that consciousness is the source of decisionmaking is actually an illusion. In the lab we can detect unconscious mental processes attached to decisions which precede (by seconds) people’s conscious awareness of having made a decision.