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If you were the boss of a group of intergalactic explorers, what would you use as the "North" on the space compasses?
  • Somewhat but not exactly. You can only go north or south until you hit the poles, but you can travel forever at angle zero starting from the center point. I guess you could call towards the center point "North" and away from it "south", so the galactic center is the North Pole but there is no equivalent South Pole. But angle zero is more analogous to the prime meridian - it's a line that goes north-south but there are an infinite number of such lines, and we could have called any of them zero.

  • What question that you've never seen anyone else ask before interests you the most?
  • I think it would not have a shape, or would rather be a zero dimensional point. For it to be any shape, it would have to have features, but you've already defined this as the fundamentally smallest 'thing' so it can't have any features smaller than itself. But you could also probably convince me that it's a sphere. I'm not sure if mathematicians consider a sphere of infinitesimal radius to still be a sphere or not, but treating it as infinitesimal kinda makes sense to me even if it's actually finitely small (the Planck length?)

    A more interesting question to me is, assuming positions in space are discrete, which I'm not sure follows from saying there's a smallest possible object, how are those 'voxels' arranged? I don't think that's necessarily equivalent to asking what the shape of the smallest object would be. Pixels on a screen are in a rectangular grid, but the actual elements are circles in some types of screens.

    There are a number of shapes besides cubes that can fill 3D space, but do the voxels even have to all be the same shape? Are we even looking for a 3D tiling, or could it be 4D in spacetime, or even higher dimension if it turns out the universe has more than 4 dimensions? Does it have to tile at all, or could it be entirely irregular while still being discrete? Is there any conceivable experiment that could prove any of these things, or is it unknowable?

  • If you were the boss of a group of intergalactic explorers, what would you use as the "North" on the space compasses?
  • The post says I'm the boss, so as a human I'm going to pick my own home galaxy as the reference. Alien species would have their own coordinate systems but it's not that hard to convert between them, or to specify which reference you're using. We'll already be converting between planetary/system/galactic/intergalactic coordinate systems all the time so it's not much harder to account for a few more.

  • If you were the boss of a group of intergalactic explorers, what would you use as the "North" on the space compasses?
  • Within the Milky Way a polar (cylindrical) coordinate system makes more sense than Cartesian - there's an axis of rotation to define the center and 'up/down' directions. Zero degrees is arbitrary but a line from the galactic center to Sol, projected onto the galactic plane, would be an obvious choice as a sort of galactic prime meridian. 'North' and 'south' don't really map to a roughly disc shaped galaxy - you'd use distance from center, angle, and 'elevation'.

    On an intergalactic scale, the center of our own galaxy is probably still the obvious choice for a center point. We could use the same axis and meridian - I don't think the rotation of our galaxy matters on any human timescale, and on the time scales where it does matter, everything is moving relative to each other so coordinates already aren't 'fixed'. I'd use a spherical coordinate system instead of cylindrical for intergalactic coordinates, since things are not roughly in a plane anymore.

    If you want a fixed coordinate you'd have to include a time dimension, and as the zero point for time I propose the Unix epoch. Not because it makes any sense but because it's extremely funny to imagine computer systems in the year 10000 still relying on that legacy decision. Though special relativity makes 'point in time' rather complex as well - I don't know enough to know what you'd actually need to make that work.

    Of course we already have such coordinate systems for astronomy if you want to know the 'real' answer, one of them is pretty close to what I just came up with: https://en.wikipedia.org/wiki/Astronomical_coordinate_systems

  • Is the Gecko engine the only reason Mozilla still exists?
  • Mullvad is a great VPN though, if Mozilla branding gets more people to use it instead of any of the scummy ones that are everywhere these days, it's a good thing for privacy, the open web, etc. - the causes Mozilla is supposed to represent. It's way better aligned with their goals than a lot of the other non-browser stuff they've been doing. I'd rather see them profit from that than from nonsense like 'sponsored stories' on the homepage.

    Drop shipping is a great analogy though - branding and marketing is the only thing Mozilla is bringing to the table as far as I'm aware.

  • where did you know about lemmy and why did you start using it
  • During the Reddit API stuff, same as most of the folks here. I tried kbin first but lack of an API or mobile app at the time pushed me to Lemmy instead.

    I eventually caved and started using the official Reddit app, but I still check here as well - less content but I like the vibes here. Reddit hasn't been the same since the protests - might just be bias but I feel like 'brain drain' was real and quality discussions over there are a little less frequent than before.

  • To date, what do you think is the greatest invention or discovery and why?
  • I was thinking the photolithography process might be almost as important as the transistor itself. Without the ability to miniaturize transistors and create integrated circuits, we wouldn't have anywhere near the level of technology we can build now. A computer made of discrete transistors would be way more efficient, reliable, and cheaper than one made with vacuum tubes, but would still be very limited. There are things you fundamentally couldn't do with even thousands of discrete transistors that became possible once we were able to scale to millions and now billions.

  • Post your Servernames!
  • My first VPS was for a Minecraft server so I named it cobblestone. I've kept using Minecraft related names for all my machines since then, and I try to pick ones that are at least vaguely related to the function or appearance of the machine. For example my cluster has brute for the master and piglin01-piglin04 for the workers, but those are the only ones I've numbered.

    The exception is my two Klipper RPi's, one is octopi since that's what it originally ran, and the other is named after the model of the printer. For some reason I never named my printers.

    I probably wouldn't use a naming scheme like this for production servers though - I'd either go with functional hostnames or something like the periodic table which you can pick from arbitrarily. My home servers and clients aren't cattle though, so I like having a little personality to the names there.

  • Where can I buy ebooks that will actually be mine for life?
  • Careful though, not every Humble Bundle is DRM-free. I just got one recently not realizing it was locked to the Kobo app. I have an Android e-reader so I'm still able to read them, but I'm pretty annoyed given that DRM-free used to be one of the major selling points of Humble Bundle.

  • Majority of Americans now use ad blockers
  • SponsorBlock is essential now. I switched from iPad to an Android tablet largely so I could use YouTube ReVanced. And on Android TV there's SmartTube Next.

    I get that creators gotta eat, but I pay for YouTube Premium already. If they would stop accepting sponsorships from scam companies I might even stop blocking those.

  • What software you consider so bad it made you happy when you left your job?
  • One of the big problems with JIRA is it's extremely configurable, so your experience depends entirely on how your admins have set it up. If your company is the type to micromanage, JIRA gives them a lot of tools to do that, which I think is why it gets so much hate from devs. I find it tolerable in my current job but it's definitely designed for managers and not for developers.

  • What software you consider so bad it made you happy when you left your job?
  • Carbon Black. As a software developer, running unknown/untrusted binaries is kind of a big part of my job. We also had a MITM SSL-intercepting proxy which made my life miserable, especially when dealing with Docker containers. I actually ended up patching Docker to automatically inject the certificates and proxy environment variables.

    On the plus side I learned a lot about certificate errors which has made me the go-to guy for any SSL issues in my current job.

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  • +1 to this! I bought the same chair from them a couple years ago, and as a remote worker it's been worth every cent. Oddly enough I had the Leap v1 as a previous job and hated it, but the v2 has been great for me. I found the armrests a bit uncomfortable but some cheap memory foam covers solved that.

  • Is weird that I like and use both Fedora and Debian?
  • I use Debian on my servers, Arch on my laptop and desktop. Different tools for different jobs. I tried Debian on my laptop a few years ago but it wasn't a good fit for me - my hardware was too new for the stable kernel, and the Wayland/wlroots stuff was too far behind. As a server though, especially since I'm mostly running Podman containers, stable and slow-updating is great! I use unattended-upgrades and haven't had a problem yet.

    I haven't spent much time with Fedora but I'd probably like it as a desktop OS - fairly fast updates, and sticks pretty close to upstream without a ton of custom theming for example. I would miss the AUR, but Flatpak covers a lot of what I need, and Distrobox could handle anything else.

  • Is anyone else worried about the apple vision pro?
  • Someone found a way to crash the kernel, which may or may not lead to an exploit, which would be just the first step in a long process of developing a jailbreak. I wouldn't get too excited yet. Even if one does get released, Apple can just patch the exploit, and it could easily be years before a new jailbreakable exploit is found.

  • Dragonfruit by protieusz - my first trackball build
  • Not sure about swipe typing specifically, but there's been some pretty interesting and weird attempts to invent better touchscreen input methods since at least the Palm Pilot era, probably on the Newton too even before that. There's also some crazy stuff from the world of wearable computing that's even more niche.

  • Dragonfruit by protieusz - my first trackball build
  • There are some similar boards with 3x6 layouts - ffkb and vulpes majora, both by fingerpunch, support 3x6 with a center trackball. I do miss the extra keys a bit with 3x5 layouts - when I eventually design my own board I think I'm going to do a 40 key layout.

  • Dragonfruit by protieusz - my first trackball build
  • There's less finger movement needed (for any alternative layout) compared to QWERTY so in theory it could be faster. In reality it seems to not make that much difference - typing speed records are still mostly set with QWERTY, and personally I think I'm about the same speed as I was with QWERTY, or a bit slower.

    It's noticeably more comfortable though. I'm not sure there's any actual ergonomic benefit, but it just feels really nice to type on. I don't regret learning it but I don't exactly recommend it either - it was a lot of effort for a small benefit.

    If you're deep enough into the ergo keyboard hobby that learning an alternate layout sounds fun to you though, then I say go for it, it's an interesting challenge.

  • Dragonfruit by protieusz - my first trackball build

    Been daily driving low-profile Gateron switches for a while but wanted to give MX another shot. Mostly so I can use my nice keycaps again. I didn't buy this filament specifically for this build but I think it works really nicely.

    Switches are Ergo Clears, lubed and filmed with (IIRC) 45g springs. They were previously on an Ergodox and barely got any use as I switched to smaller boards shortly after modding them and wasn't comfortable with desoldering yet, so I'm happy to have finally found a new home for them.

    Caps are MT3 Godspeed, case is Overture Matte PLA (light blue and white), printed on the Sovol SV06 Plus.

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    Some laser cut tokens I made, inspired by Sly Flourish

    Original article here: https://slyflourish.com/crafting_lazy_monster_tokens.html

    I thought these icons would look nice laser etched on wood, and I'm super happy with how they turned out!

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    Some laser cut tokens for D&D, inspired by Sly Flourish

    I'm just starting to DM and I liked this idea of a set of generic tokens that can represent any monsters you don't have minis for. I also made one for each character class. For a campaign I'll probably use my resin printer, but tokens like this will be great for one shots or whenever I don't have tons of time to prep.

    I'm super happy with how these turned out.

    Original article here: https://slyflourish.com/crafting_lazy_monster_tokens.html

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    InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)DE
    DeltaWhy @lemmy.world
    Posts 3
    Comments 32