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Joined 3 years ago
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Cake day: June 11th, 2023

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  • I had hoped I was making it very clear that it’s not a case that all mathematicians are weirdos or even difficult to talk to, because they’re not.
    Thinking about complicated things all the time results in complicated conclusions, so you’ll end up talking to people with very detailed thoughts if you’re talking about work. Probably perfectly normal thoughts on cooking beyond a bias towards using their analytical ability where others might not.
    My point was not that they’re all weird, but that the bar is higher because you deal with more people who have thought about something much more than you have.

    My point with the paper wasn’t that it’s weird to have fun, or that the title was bad. It’s that it was complicated and an example of the field requiring you to deal with profoundly unfamiliar ideas and terminology, potentially quite regularly. To some people “that sounded like gibberish” is a sign you dismiss it. In this case, it means you need to do more research to catch up to the terminology.

    The two that I was thinking of were erdos and diffie. I’ll concede to featuring some of the more notable characters because their stories are more fun.

    The idea being described was a paraphrase of platonic realism and structuralism taken to an extreme to match simulation theory. If the universe is a simulation it means there is, “somewhere”, an equation or algorithm describing our physical reality. Needing that equation to be evaluated to give rise to our universe is an odd perspective since the existence of the equation would be sufficient. An equation describing the motion of a point in a circle doesn’t need to be evaluated to describe that, nor does it need to be written down.

    It’s a notion that I thought fit well with my point of “agree or disagree, it’s not delusional, and it’s not obvious”


  • While it’s not true that intelligence is correlated with mental problems, advanced mathematics tends to attract or create odd ducks.

    There are multiple mathematicians in the modern era who are well regarded, technically homeless and just showed up at people’s houses to collaborate on some math. One, who coined the phrase “another roof, another proof”, was a staunch proponent of mixing amphetamines, coffee, and 70’s antidepressants.
    People didn’t notice John Nash devolved into a deep schizophrenic break for a long time because it’s not weird for advanced mathematicians to be talking about very complex unintelligible ideas. Scary Wheels and Super Shrubs is an example of a good title and not-transparent description.

    Another was the uni-bomber.

    There’s plenty of perfectly well balanced mathematicians. You just can’t help but get some weird ideas when your life’s work is to think outside the box about very complicated things all the time.

    If you go deep into math work, you’ll meet people who think the universe is a simulation. You’ll meet others who think that’s silly, because the universe is clearly actually an abstract embodiment of the platonic ideal of mathematics. 7, blue, and cat are all equally real or not real, and we don’t need a simulation as the equation defining structure is sufficient to give rise to what we experience, and requiring it to be written or executed is just an odd affectation.
    You’ll just nod and concede the appeal because it’s not the first time someone has shared that idea with you.

    So when the mathematicians start saying the ideas are getting odd, you know it’s not just “I don’t understand therefore it’s weird”.



  • It’s less common to have a light or crosswalk away from a junction. Usually when you push the button it changes the lights to the crossing sequence on the next cycle so everything keeps flowing, so a pedestrian might hit the button, then wait for traffic to stop, then cross traffic, then a dedicated turn cycle. It can be a bit of time.
    The light in question would turn yellow the moment you pushed the button, without integration with the nearby lights. Driver’s usually don’t expect to get stopped after being allowed to pass a red light after only about 100 meters.

    In general, there’s too much variation to say the US as a whole doesn’t do some traffic thing. If it exists odd are someone tried using it on a road somewhere.


  • Yeah, a lot of the time they’re just there because people look for them if they’re not and then they fidget, don’t wait for the signal and dash into traffic.

    The town I grew up in, the vast majority didn’t do anything but they gently beeped, and if you pushed the button it would tell you the sign status until it completed the cycle. Helpful for vision impaired people.
    There were a few that shifted the traffic lights to a different cycle and otherwise it never did a pedestrian cycle.

    There was one though, where pushing the button nearly immediately started a pedestrian cycle.
    There was a wide block with an apartment building in the middle on one side, and a grocery store directly across from it. Not long enough that people complained, but enough so that people still trotted across the otherwise busy street a lot. After trying nearly everything else they eventually put a traffic light in the middle of the block that was nearly entirely on demand for the crosswalk button, because almost any delay and the (college student) residents would just dash across.

    Watching confused drivers was fun.


  • Typically you want to do the lockout for a location, not the user, or you step up the auth level. 3 bad logins -> please mfa before trying again.

    But yeah, letting an attacker do that at will is bad. I’m a fan of token bucket rate limiting with exponential back off. You get 10 attempts. A new attempt is added every second. An attempt while the bucket is empty makes that become two, then four and so on.

    Most people never notice because a buffer of ten and a new attempt every second just never runs out. If you accidentally hold down enter you’re only blocked for a few moments. A dumb attacker quickly locks themselves out forever.


  • Very old operating systems used to have a method for password hashing built in that could only handle 8 characters max. The need for compatibility with it, or things that were too zealous in being compatible lingered for a very long time.

    It’s not good, but some services end up behind firewalls that reject inputs that look like SQL injection. Sometimes they decide it’s better to prevent sql-ish passwords than risk some weird fluke.
    Sometimes they just say |, I, and l all look too similar and our users are idiots. Which is awful practice.

    My personal feeling is that password length should be capped with the length of input the system can handle. Plaintext copy of Alice in wonderland from project guttenberg? Go for it.


  • Yup.

    Crt monitors are the stereotypical "surprise, you just pushed the dead button!” device, but microwaves too.

    Their transformers are the bit that kills the most hobbiests though. Crazy high frequency high voltage transformer that chooses not to fuck around when you plop it in your project.