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Cake day: March 15th, 2024

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  • I had a booth about this at the Bay Area Maker Faire lately.

    If we’re all printing the same object on our 3D printers, it’s proooobably a lot less trouble to just have someone injection mold it and save us all the trouble. 3D printers are really great for one-offs and mass-customization and things like that. Aaaaaand, I feel like it’s kind of an under-appreciated problem in 3D printing. Because, yeah, CAD is hard and we’re never going to reach a world where every 3D printer owner is very very comfortable with CAD, and so it should be more of a concrete goal for the 3D printing community to make sure that we’re focusing on this problem. It’s important that every 3D printer owner can do at least some amount of tweaking and customizing, otherwise we’re failing as a community.

    Now, I don’t Tinkshame. I spent a lot of time learning Blender, FreeCAD, and OpenSCAD to prove Naomi Wu’s assertion that we should all just get over ourselves and use TinkerCAD. The only real problem with it is that it’s not really free, it’s “free at the pleasure of AutoDesk” where they could raise the “Mission Accomplished” banner at some point and turn it off. And there’s not really an open source version of it for roughly the same reason that random thingiverse models are always kinda halfassed and bad. Doing a good TinkerCAD-but-actually-free-by-some-definition is actual work to get everything right and polished and documented and bug-free and nobody really wants to pay for it.

    Also, maybe I am pedantic and obsessive, but I don’t really like screwing around too heavily with models in a slicer, so I’d rather they take some of the magical code in the OrcaSlicer/PrusaSlicer/SuperSlicer tree and actually organize it into something that could be TinkerCAD-esque?

    Anyway, the core of the talk of my booth was systems and libraries of 3D printable objects. So, for example, there’s the Honeycomb Storage Wall system and some of us have been writing some neat lil OpenSCAD libraries and models for it (and another group of people have been doing similar things in Fusion) where you can make a parametric model so you can measure your flashlight and print a cute 40mm holder for it based on the measurement without having to model things from scratch and it’ll click into the HSW wall and it’s fine unless you are married to someone who has ommetaphobia and then you need to make sure that the honeycomb is the same color as the wall. And the same is true for Gridfinity, just you can put that in the drawer.

    And there’s also a lot of parametric models. I’m not sure what you are looking to print, but there’s a decent selection of people who have done stuff in Fusion or FreeCAD or OpenSCAD where you can download the model and change the parameters to get it a lot closer to what you want without going through all of the drama of making it all over again.

    I love using OpenSCAD. I’ve got a buncha years of experience using various 3D modelling tools at various times and so I can use Blender or FreeCAD quite well actually, but in the end, I do a lot of functional bits and it’s so darn easy to just write some code because, actually, I’ve been working as a professional software engineer for quite some time.

    So… dono, it depends on your aspirations? There were a good number of Gridfinity-like systems that were around before Gridfinity came out and they were … ok, but not great, but then Gridfinity came along and did a boxy-box system just like was already there but with some interesting tweaks and making it more amenable to real customization and suddenly everybody went gonzo over Gridfinity in particular. So you might not be just making a thing that exists in a dozen forms better if you borrow an idea and make your version of it.

    Also, I learned 3D modelling tools mumble mumble years ago in a failed attempt and/or dodged-bullet because I’d wanted to do games or special effects as a kid. The software I learned on is long gone, but it turns out that once you are thinking about things, it tends to stick? Which means that I learned pottery while visualizing the objects I was making on the wheel as if they were in the CAD window of my mind, got good at photographic lighting based on what I’d observed in the 3D program, and then transitioned back to CAD because I wanted to make things, so it’s kinda one of those things where you probably won’t waste the time spent.

    tl;dr: I learned OpenSCAD, FreeCAD, and Blender to prove that Naomi Wu is right and we should all get over ourselves and use TinkerCAD and … she’s still probably right, LOL.





  • Trek always had to soft-sell some of the socialist ideals (e.g. “we don’t need cash” without really explaining how things really do work) and then also a lot of science fiction that was popular in the more literary side of things during the 80s was actually frighteningly right-wing.

    There’s not really a good version of conservatism that works in this modern era, especially when you come to where the parties are staked in the US, but even in general. You can’t have a modern society with all of the complexities and interrelations and cost and then have it be entirely hands-off conservative capitalism. This is why even when you talk to people who are nominally part of the right wing and actually go through the checkboxes of things that they must necessarily adhere to, you see a lot of people who are so-called RINO people … and then a bunch of weirdos who nobody likes.

    The brain’s got a bunch of structures probably to prevent us from spiraling into depression when we were hunting the African savanna when our buddy got eaten by a tiger and there wasn’t anything we could have maybe done about that that cause today’s cognitive dissonance.

    So basically the only way you can get a frighteningly actually unpopular platform through the electorate is by taking advantage of cognitive dissonance. Because you have to project this idea that a fundamentally backwards idea is going to move us forwards somehow.

    If Copyright hadn’t been extended for so many centuries, Trek characters would already be in the public domain and we’d see them fictionally used much in the way that we use all of the characters from actual public domain works. Shakespearean heroes, for example. But, even as things are now, the characters of Trek have had such a presence in the media scene that they do kinda take that aspect on. Thus, basically repeating the plot of part of the Babylon 5 episode “The Deconstruction of Falling Stars” where you have the crew of Babylon 5 being used by a new fascist empire being holographically simulated to say 1984-esque things… one of the weapons to maintain a state of cognitive dissonance is to go back and kinda put fascist words into leftist mouths.

    So it’s a bit of an accident on the part of the person, who is being dragged along politically, but it’s very much part of the conservative movement to “reclaim” old media and the relatively milquetoast treatment of alternatives to capitalism and a complete abandonment of queer issues in middle-era Trek makes that kinda easy, which I guess is why NuTrek does go through some pains to state things a bit more forcefully.



  • Engineering leaders have to work as bullshit detectors. People aren’t even necessarily trying to lie, they just built up an unconscious tower of their own ego and it’s hard to step back far enough to get them to realize that maybe the surefire solution they are emotionally invested in that’s theirs is actually super-sketch. Presumably there’s a bunch of people on the Boeing team working thrusters who were totally convinced that they understood it well enough, the simulations all showed it was fine, etc.

    But you can’t, as a leader, inspect everything in deep detail. So you have to have a shortcut, which is you detect bullshit.

    Boeing triggered the bullshit detector. (Or, depending on how you see things, “Boeing finally triggered the bullshit detector”) And once you’ve triggered the bullshit detector, now everything’s going to be checked for bullshit.


  • So, there’s a lot of things to unpack here.

    First, the idea that your spouse is your primary sole emotional connection is a relatively weird new concept on the scale of things. There’s been a huge period of history where your primary emotional connection was your male companions and your spouse was infantalized by comparison. If you were well-off you might be so lucky and have your group of emotional companions, your group of romantic companions, and the person who bears your legitimate children.

    Second, there’s really not much of a good underlying working model for actual modern conservatism. The frontiersman/“house on the prairie” sort of rugged independence was never actually a thing back then and a lot of big issues like medical bills were a lot simpler when the answer to having any sort of illness was that you either get over it after relatively inexpensive and simple treatments or you die. So the conservative movement must necessarily sell you a false bill of goods. US politics are such that there is no actual fully-left political party, so that by default makes you a democrat.

    There’s also a bunch of added uniquely christian baggage. So there are left-wing christians who also have their own set of weird baggage.

    Third, mostly irrespective of politics, there’s a lot of cultural programming for males that they can’t actually worthwhile work though their emotions in a productive fashion. Movies, TV shows, books, literally everything in the media creates this idea of maleness and the writers are just trying to write a catchy story and seldom have time to think about what kind of male they are creating. This is, overall, a relatively recent concept.

    Fourth, “things men need emotionally that women cannot provide” is actually pretty silly. Outside of practical advice about what to do with specific pieces of anatomy where maybe it would be nice to have some reference, the things people do is a pretty wide field. “Oh, someone to watch football with” ignores female football fans, et al. This ties in a lot with right wing men because they can’t necessarily have an emotional connection with someone not-male because that’s equivalent to messing around with someone’s property. And it also ties in with the social programming that created a stereotype for how men are supposed to relate to each other that’s just a writer trying to put a good story together without thinking of the social implications.

    Radicalization doesn’t work on people who are emotionally connected and comfortable. Part of why we are where we are is that there’s a whole class of people whose happiness has been precluded by the structure of their lives and the best people who can take advantage of this are fraudsters selling a false bill of goods. And I don’t even really feel sympathy for those people anymore because they are hurting people who I do very much care about and after a point it doesn’t matter if they are just too dumb to see it.

    But, I guess, to return to your initial point, the idea that if you find a person and get married to them that you have “solved” connection, that’s the road to unhappiness. Partially because marriage generally requires a commitment and effort to stay together as things happen and people change… but also because relying on one single person without other social connectivity is not a stable equilibrium.



  • A few years ago now I was thinking that it was about time for me to upgrade my desktop (with a case that dates back to 2000 or so, I guess they call them “sleepers” these days?) because some of my usual computer things were taking too long.

    And I realized that Intel was selling the 12th generation of the Core at that point, which means the next one was a 13th generation and I dono, I’m not superstitious but I figured if anything went wrong I’d feel pretty darn silly. So I pulled the trigger and got a 12th gen core processor and motherboard and a few other bits.

    This is quite amusing in retrospect.







  • I mean, I think he’s a textbook example of why not to do drugs and why we need to eat the rich, but I can understand the logic here.

    When you navigate a car as a human, you are using vision, not LIDAR. Outside of a few edge cases, you aren’t even using parallax to judge distances. Ergo, a LIDAR is not going to see the text on a sign, the reflective stripes on a truck, etc. And it gets confused differently than the eye, absorbed by different wavelengths, etc. And you can jam LIDAR if you want. Thus, if we were content to wait until the self-driving-car is actually safe before throwing it out into the world, we’d probably want the standard to be that it navigates as well as a human in all situations using only visual sensors.

    Except, there’s some huge problems that the human visual cortex makes look real easy. Because “all situations” means “understanding that there’s a kid playing in the street from visual cues so I’m going to assume they are going to do something dumb” or “some guy put a warning sign on the road and it’s got really bad handwriting”

    Thus, the real problem is that he’s not using LIDAR as harm reduction for a patently unsafe product, where the various failure modes of the LIDAR-equipped self-driving cars show that those aren’t safe either.


  • It’s important to realize that the nerd you saw on the news has always been someone wearing nerd as a costume and the entire history of technology is loaded with examples of the real nerd being marginalized. It’s just that in ages past the VC’s would give a smaller amount of money and require the startup to go through concrete milestones to unlock all of it so there was more of a chance for the founder’s dreams to smack up against reality before they were $230m in the hole with no product worth selling.