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Joined 1 year ago
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Cake day: July 8th, 2023

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  • How about a government-sponsored, non-profit authentication service? That is, it should be impossible to get a loan, open a line of credit, or anything else in somebody’s name, without the lending institution verifying that it’s actually on behalf of the named individual. Eliminate the security-through-obscurity technique of using bits of easily-leaked personal information as a poor substitute for actual authentication.

    I mean, (as a comparative example) I have to go through an OAuth2 consent dialog to connect a third-party app to my email account, yet somebody can saddle me with huge debts based on knowing a 9-digit number that just about everybody knows? It’s the system that’s broken, tightening up the laws on PII is just a band-aid.




  • This is madness, but since this is a hobby project and not a production server, there is a way:

    • Shrink the filesystems on the existing disks to free up as much space as possible, and shrink their partitions.
    • Add a new partition to each of the three disks, and make a RAID5 volume from those partitions.
    • Move as many files as possible to the new RAID5 volume to free up space in the old filesystems.
    • Shrink the old filesystems/partitions again.
    • Expand each RAID component partition one at a time by removing it from the array, resizing it into the empty space, and re-adding it to the array, giving plenty of time for the array to rebuild.
    • Move files, shrink the old partitions, and expand the new array partitions as many times as needed until all the files are moved.

    This could take several days to accomplish, because of the RAID5 rebuild times. The less free space, the more iterations and the longer it will take.



  • I feel this in my soul, except about Windows. I’ve got a handful of machines at work that refuse to update to Windows 10 22H2. They give an error code during the compatibility check. Googling that error code returns dozens of forum posts with hundreds of users and “Microsoft support agents” chiming in. They give the same list of suggestions—that don’t work—to fix it. Nobody can say what the error code means, or what the compatibility check checks. The official Microsoft fix is to reinstall.

    I don’t want to reinstall. The suite of software these computers run would take several hours to reinstall.

    This is typical of my experience with Windows. (I’m a Unix/Linux guy.) I look up how to do something in Windows, and with the official Microsoft documentation, one of three things inevitably happens:

    1. I follow the steps and click the things, and it still doesn’t work.
    2. I can’t follow the steps because one of the things to click is greyed out for some reason.
    3. I can’t follow the steps because the documentation refers to an older edition, and Microsoft has removed one of the things to click.

    One time, when trying to get Excel to run a mail merge, I ran into all three problems in three attempts.

    The same happens with 3rd party sites. They never say the edition of Windows to which their guide refers, and the feature is deprecated or gone. (Most recently it was about getting a Windows 10 start menu behavior back on 11.)

    Oh, and since Windows is mainstream, a lot of the information is in the form of AI vomit, and covered in ads and dark patterns.



  • Oh, hey, Jerboa is not so good about updating the Inbox tally…

    I was responding to your question about kW per hour, and I was going for the intuitive sense of why that’s not right. The more “it’s just so” reason is that the math just doesn’t work, since the word “per” signifies division. So if we discharge a battery at a rate of 100 watts for 3 hours, that’s 100W * 3 hours, or 300 Wh used. If we say 100 watts per hour for three hours, that’s 100W / 1 hour * 3 hours. The hours cancel, and the result is 300 watts, which is a rate.

    It’s totally confusing, I know, because people often use “watts” and “watt-hours” interchangeably, but they’re as different as speed and position.

    Anyway, the watt is a derived unit in SI, and it’s equivalent to kg·m2 / s3. The per-unit-time is hidden when you write it as a watt, but clearly there when you write it in terms of base units. Of course, the joule is kg·m2 / s2, so energy also has time in the denominator, and I guess could technically also be a rate, but understanding that is way above my pay grade. 😀


  • A watt is a derived unit for a rate of change, an amount of energy used in a unit of time, so P = E / t. A kW per hour would be a rate divided by time, or E / t^2, resulting in another rate.

    More colloquially, think of watts/power by analogy to another rate, that of speed. Moving at a speed of 100kph for 3 hours results in 300 speed-hours of distance. Saying 100 kilometers per hour per 3 hours sounds awkward, but is actually a weird way to say acceleration, a rate of change of speed. (And probably a hint to get your car serviced.)

    Anyway, the key is to think of a kilowatt as a rate, not a quantity.


  • This is an infuriating aspect of this case. The courts could have held the clinic responsible for this loss without declaring that all frozen embryos are children by invoking the “prime mover” concept. Other courts have used it in, for example, surrogacy cases. In short, that concept holds that it’s the intent of the parent(s) that matters, as the prime movers in the process of bringing a child into the world, not just the mixing of some genetic material. Those destroyed embryos could have become children, as it was the parents’ intention to do so. And if nobody intends to implant embryos, for whatever reason, without the intent to make a child, they’re merely organic material, neatly sidestepping those questions.

    But, of course, the court wanted to impose its religious orthodoxy rather than issue a sensible ruling. Now we have those thorny questions.





  • As a natural pedant, I have to point out that that’s not quite true. Decades ago, people talked about global warming (due to the greenhouse effect) because we feared that it would lead to major climate change.

    Then, it led to major climate change. Now we talk about that. Global warming is still a thing, it’s just the effects have upstaged it as a topic.