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Joined 2 years ago
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Cake day: June 17th, 2023

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  • For nieve signal distances, that can sometimes be true. That’s not how starlink works however. It bounces the signal between satellites, each adding latency. Overall, fibre wins in almost every situation.

    The bigger problem is saturation. Most things you can apply to radio waves can be applied to light in a fibre. The difference is you can have multiple fibres on the same run. This massively increases bandwidth, and so prevents congestion.

    Just checked the numbers. Starlink is up at 550km. That means a minimum round trip of 1100km. In order to beat a fibre run, you are looking at over 2000km distance. Even halving that to (optimistically) account for angles, that’s still a LONG run to an initial data center.


  • cynar@lemmy.worldtolinuxmemes@lemmy.worldMen can't read our signals
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    1 month ago

    Off the joke topic, but something that made it make a lot more sense.

    Scientists have studied this. Women do what are known as IOIs (Indicators of Interest). Most men can pick up on these. When they flirt, the rate doubles, or even more.

    The problem lies in the base rate. It can vary a lot, from 5/hour to 120/hour. At this point men are left with a conundrum. Is a 60/minute lady a 10, desperately flirting, or a 100, who’s slightly off put by you. The lady’s friends have an instinctive read on this rate, so it’s quite obvious. Most men have been burnt however, so tend to be over cautious. This can lead to a lot of flirting at oblivious men, who think you’re just being polite.




  • Apparently it’s mostly about familiarity. Even if we are annoyed at the time, we will often forget about it completely between then and shopping. By the time we are in the shop, we just have a vague sense of familiarity with the product. We instinctively buy the more familiar, as the “safer” option. It takes conscious effort to overcome this (which most people don’t have to spare).

    In saturated markets, this leads to a zero sum situation. Every customer you get is stolen from a competitor. Apparently the tobacco companies actually loved the UK ban on tobacco advertising. Their ads were intended to counter the ads of their competitors. None of them were roping in new smokers at a high enough rate to matter. The only ones winning were the ad agencies.








  • There are already plans for metadata signing. I think some high end Canon cameras might do it already. It basically allows proof (via public private key of the hash) that a particular camera took that photo.

    The idea is that you can create a chain of custody with an image. Each edit requires a new signature, with each party responsible for verifying the previous chain, to protect their own reputation.

    It’s far from perfect, but will help a lot with things like legal cases.



  • Its part of iterative improvement. The resonance causes the beam to spread out, which both makes getting results harder and losing more particles in route. The resonance is caused by the magnets used being imperfect.

    The point of the article is they have created a model that predicts these resonances accurately. This will be of limited benefit to them, though it will help clean up some data. The big advantage for future constructions is by knowing how the field becomes imperfect, measures can be taken to correct for it. This will make future particle accelerators better. The same problem will occur in larger fusion reactors. By studying this now, they can be improved before they are even built.

    “In theory there is no difference between theory and practice. In practice there is a huge difference!”


  • The seller thinks the value is net negative to them. The buyer thinks it still has a potential positive value. Both would agree to just hand it over.

    Unfortunately, UK law does not allow that. Consideration must go both ways. The simplest way is to sell for the minimum reasonable amount. $1 is traditional in the US. In the UK it is £1. The other commenters link has a good writeup on the practice.



  • You’re likely picking up on her autism. Most aspies put on a (mental) mask to interact with others. For most it’s intended to be inoffensive and keep you in the background. Greta’s is focused on her goal. She would likely prefer you hated her, but knew about her causes, than be likeable, but forgettable.

    As for harmless, that’s part of the image. She’s as harmless as a friendly bull. It will happily get scratches behind the ears, but still walk straight through the wooden fence to let the cows roam free.