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Cake day: June 17th, 2023

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  • cynar@lemmy.worldtome_irl@lemmy.worldMe_irl
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    6 hours ago

    It’s a combination of factors. Language/cultural barriers are a big one. What is obviously sarcasm in your area of the world won’t necessarily make sense in another. Add in English as a second language, and it’s a crap shoot, even with an obvious joke.

    The lack of tonal queues is also a problem. We communicate a lot via voice tone and body language. Without them, what is obvious to you can be read completely differently.

    The last is the elephant in the room. Bigots dog whistling. I’ve seen too many “obviously sarcastic” jokes that are very much not sarcastic in a different group. When those people get called out, they fall back on “it’s just a joke”, the armour of arseholes the world over. By adding the /s preemptively, you rob them of cover to spread hate. It’s a variant of the nazi bar problem.





  • cynar@lemmy.worldtomemes@lemmy.worldChat, are we cooked?
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    1 day ago

    They also happen to be a (retired) nurse themselves. It’s uncommon, but not that uncommon. Most nurses would have seen it before. Its only for 5-10 seconds after waking up. Coming from a relatively skinny woman is quite a bit more unexpected. She also has unusually good aim.




  • I saw a talk from someone working in the field a few years back. The “fusion is only 10 years away” had a small proviso “if fully funded”. The actual funding was barely enough to keep the lights on.

    That has now changed. It’s gotten close enough that private investment has decided it’s worth investing in. I believe the only really big problem left is the wall material. The neutron flux transmutes the elements making it up. This makes it difficult to maintain a hard vacuum, since the wall can start leaking and/or outgassing, forcing a shutdown to replace them. On a minor plus side, if you dope the walls with mercury, it transmutes to gold, in commercially viable amounts!

    Fusion has several advantages over fission. The biggest is the impossibility of a meltdown. The very difficulty in balancing the reactor means that it shuts down fast and mostly clean. This would let them be placed far closer to population centers. They could provide a base load supply, in the way nuclear could/should have.


  • cynar@lemmy.worldtomemes@lemmy.worldHis legacy
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    3 days ago

    The bacteria don’t need to be identical.

    Think of it like rolling a dice. Any given roll can only have a single number. However patterns can be detected by combining multiple rolls. E.g. a biased dice.

    As for larger things. It’s possible, but the speed required goes up with mass, and not linearly. In theory a person could go through. They would be moving a significant fraction of the speed of light however. Catching them alive on the other side would be… difficult.


  • cynar@lemmy.worldtomemes@lemmy.worldHis legacy
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    3 days ago

    Only 1 bacteria ever arrives. It’s the probability wave that interferes with itself.

    With the Young’s double slit experiment, if you fire a single photon, you get a single photon arriving. It looks just like how a cannon ball flies. It’s only when you let hundreds go (either collectively or individually) that the interference pattern appears.

    The end pattern is the probability that the photon (or bacteria) arrives at any given point on the receiver screen.


  • cynar@lemmy.worldtomemes@lemmy.worldHis legacy
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    3 days ago

    Anything moving has an associated wavelength. If that wavelength is long enough, you can do the young’s double slip experiment on it.

    It was a few years ago, so the details are hazy. A scientific team accelerated a particularly small and sturdy bacteria fast enough that their speed produced a viable wavelength. They then sent the stream through 2 slits. They then captured the bacteria in aerogel (I think) to slow them back down.

    Most didn’t survive, but some both survived, and ended up somewhere they couldn’t without interfering with themselves. They successfully reproduced afterwards. The debris also followed the classic ripple pattern of the experiment.

    Basically, there is nothing special about “life” when it comes to quantum mechanical effects, other than it’s on the big side.



  • It’s not perfect, but no system is. The goal is to keep a level of equibility, while also allowing the good to benefit from their own efforts.

    If the rich invest in their children, and make them exceptional, that’s fine. Trying to get parents not to do that goes against extremely strong instincts. The goal is to make climbing the wall harder, not impossible. If the child buckles down and takes advantage that’s fine. If they slack off and coast, they will coast back towards the mean income level. They won’t get the run away effect that happens currently.

    A lot more can be done at the bottom. Giving poorer children the education and support facilities needed to reach their potential would make a huge difference, for a relatively small investment from society.

    It’s also worth noting that I’m also an advocate for UBI. There should be a floor on how poor people can be. As a society, we can afford to support that.


  • Just an FYI, that goes all the way down the power chain. We tend to have less (instinctive) empathy for people below us. It’s not we actively want to do them harm, but that we just don’t think about them at all.

    E.g. when did you last take proactive action to help the exploited workers harvesting chocolate? You likely never even thought about them.

    The problem is that people like musk look down on us the same way. We get smashed by their indifference.

    The best long term solution is a tax system aimed at “regression to the mean”. I.e. exceptional people can get rich. However rich, “average” people will regress back towards average income and savings. Conversely, an averagely capable poor person should easily climb back up to average income levels.

    Basically change the graph from a hump to a bathtub shape.




  • Silicon’s conditions would make it difficult. It has far less inorganic precursor molecules to work from. It might work under cryogenic conditions, but that has a bunch of other problems.

    The titanium one is new to me, and potentially interesting. My concern would be an abiogenic pathway. It might be able to form interesting molecules for life, but if they don’t appear naturally, then getting life started gets massively more difficult.

    There’s also a hell of a lot of options with carbon based life. Earth life is VERY locked into a few variants with our base biochemistry. E.g. there’s no reason for particular RNA sequences to match particular Protein peptides. Yet it’s basically a universal thing. Even chirality is fixed, for no particular reason other than mixing causes issues.

    I could potentially see a dual based life system working, effectively a more advanced version of how some creatures use metals to make shells etc, or how horns and hair grow. It could also provide a viable (though extremely convoluted) bootstrap process for titanium life, or something more exotic. Forcing life to change its core functionality however is apparently quite difficult, since no life on earth seems to have done so and survived to be detected. Rocky, in Project Hail Mary, would fall into this group (a carbon life core basically piloting a stone and metal mech).


  • What combinations are you thinking of?

    Life on earth is based around Carbon chains. Carbon’s 4 bonds allows for a low of complex structures that would be hard/impossible for less bonds.

    The only other viable option I know of is silicon. Unfortunately its chain equivalent has an extra reaction pathway with water. It would degrade rapidly if exposed to water, which is very common at the energies it would work at.

    I’d be curious to look up any other viable options.


  • The uncanny valley is FAR stronger with moving things Vs inanimate ones. It’s likely modified from a revulsion of dead things, but seems to be distinct now.

    Most diseases don’t show strongly enough to trigger it, most of the time. Historically, the exception has been leprosy. I’m honestly curious if it’s evolved to keep us clear of leppers specifically or not.


  • There are 2 parts at work. The focus reflex and the blink reflex. The window between them is the dangerous part. If the pulse is fast enough ( a few ms) then the eye can’t focus, and it’s fairly safe (unless you were already focused on the emitter). If the pulse is low enough power then the blink reflex kicks in and protects your eye.

    Hitting a mosquito is a hard task, tracking one is even harder. It’s better to use an ultra short pulse, with a bit more power. You can also shift the frequency. If it’s an infrared laser then the eye won’t lock onto it, and will struggle to focus it dangerously.