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Joined 11 months ago
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Cake day: August 3rd, 2023

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  • Computers are binary, yeah? So we have to represent fractional numbers with binary, too.

    In decimal, numbers past the decimal point are 10^-1, 10^-2, … etc. In binary, they’re 2^-1, 2^-2, …

    2^-1 is one half, so 0.1 in binary is 0.5 in decimal. 2^-2 is one quarter. 0.11 in binary is 0.75 in decimal. And of course you’ve got 0.01 = 0.25

    The problem comes when representing decimal numbers that don’t have neat binary representations. For instance, 0.1 in decimal is actually a repeating binary number: 0.0001100110011…



  • jana@leminal.spacetoAsklemmy@lemmy.mlReddit / lemmy vs Old internet forums
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    10 months ago

    Personal example: I once asked on the linguistics subreddit why desceiptivist linguistics were preferred to prescriptivist and was downvoted to hell and back. The only replies were to call me a racist. I never got an answer, and I still don’t know. So voting is not the end-all be-all of forum mechanics.

    I’mma have to call bullshit here, unless there just so happened to be a different person using the name quindraco on Reddit who asked this very question.

    • Your question was answered.
    • You may have gotten downvotes, but it was certainly not “to hell and back” – your post is currently sitting at +18.
    • Not a single person called you racist, even after you compared descriptivism to literal genocide.






  • Okay, so generally the way it works is you have some app (e.g. Google Authenticator, 1password, Aegis, Bit warden – anything that supports TOTP). When you enable 2FA for a site, it’ll give you a QR code. You scan that with your app and then the app gives you a six digit code that changes every 30 seconds.

    The QR code is really just an easy way to get a long string of characters into your app, though, and if the QR code doesn’t work there should be an option to see the raw code and manually enter it.

    You enter that code in once to confirm that you have actually set up the 2FA. Then it will show you a list of recovery codes. It’ll only show you these once; it doesn’t store them anywhere. You need to note them down in whatever way suits you best (I print mine; you could also just write them down). You cannot see these again. The best you can do, if you still have access to your account, is generate new ones (probably by disabling and re-enabling 2FA)

    Now, whenever you login, you’ll be asked for your authenticator code (much like an SMS). You just open whatever app you used and enter in whatever code it’s currently showing (remember it’s time based).

    If your authenticator app gets messed up somehow, you can recover it using your recovery codes.