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Cake day: June 16th, 2023

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  • Scroll down a bit in this article. There’s a list of what each of the available keys are required to provide. A “key” in this context is basically a notch in a certain location, which then defines the meaning of the various pins of the connector. Some devices have multiple keys, as some of the specifications have a common subset. Like key A+E is common, because E provides almost everything that A does, so a device that only requires the common interfaces can work in both. Cars that rely on one of the exclusive interfaces will have the specific key of course. This A+E communication is often used for WiFi cards.

    Sockets always only have one key though, for obvious reasons.

    Edit: correction/clarification










  • That’s not actually a solution when talking single-use either. Remaking the bottles from recycled glass is incredibly energy intensive and not an environmentally friendly process either. Multi-use bottles are much better, but the cleaning required also isn’t that simple and also relatively energy intensive (far from remaking the bottles of course).

    There’s also practical downsides to glass (heavy, breakable), but those are subjective and their relevance highly depends on the use case.

    Ideally, we wouldn’t buy stuff to drink in any kind of bottle, but just use tap water. possibly just buy some concentrated stuff to then make your actual drink at home. Nothing beats the effectiveness of transporting water through a simple pipe, but that isn’t even possible everywhere in the world due to drinking water quality issues…


  • The “key” of an m.2 defines what the pins mean, basically what signal they carry (PCIe, USB, …). There’s a nice table here, if you scroll down a bit. Some are extensions to others, and are pin compatible (meaning the things they have in common are on the same pins).

    A key and E key are very similar, while E just provides a few more interfaces, but importantly A doesn’t provide anything the E doesn’t. So any card that can work in A can also work in E. This is why A+E is so common: they don’t require the Mainboard to provide E, only A, but both will work so both notches are present.









  • Maybe they down vote because they think I don’t like the research or think it’s pointless (far from it). The only thing I dislike is the reporting about it, and even there mostly the clickbaity headlines intentionally misrepresenting the facts. It’s clearly intentional, because when reading the articles it usually becomes quite clear that the author was well aware.

    I can also imagine that articles like that stop at least a couple of people here and there from adopting solar for their home, cause they read what they think means that there’s about to be a 10% efficiency increase for panels. Clearly that’s a time to wait, not to buy! The number is people that only read the headline is probably uncomfortable high, but I got no clue what the actual percentage is, or if those that don’t click through take the headline at face value…



  • That’s pretty definite by any measure.

    Not really, sorry. The complaint still is that the announcements are of some magical huge improvement that is just not real. They might work in a prototype, maybe in a laboratory, or the thing just disintegrates after being exposed to water or something. Of course the results influence existing or future products, that’s how the real world improvements come about.

    By the time you modify the prototype (or whatever) into something that is actually real world production viable, with a reasonable lifespan and production costs, there’s barely anything left in common with the hyperbolic announcement about fantasy stuff.

    I stand by that statement you highlighted. And the fact that it isn’t hyperbole. With all of these achievements being released as clickbait news articles, somehow when something exciting it’s actually everything the market, it’s crickets. Like solid state or “salt” batteries are starting to become products, seen any articles on those posted here recently? Or in news outlets in general? I haven’t, but I honestly could’ve just missed them, or they didn’t gain as much traction.