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Joined 1 year ago
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Cake day: February 1st, 2024

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  • Can you explain the Ethernet requirement more? Was that just that the computer didn’t have WiFi, or was it set up such that only the wired interface worked with their VPN, or…?

    Can you explain your travel router situation? Did you use the travel router to access WiFi and provide an Ethernet port for the computer (I think this is called “WISP mode”)? Or was this an 4G/5G router?

    In any event, at least on Android you can connect to WiFi and tether to a computer over USB. It’s very useful for setting up a computer without WiFi drivers, as Linux will almost always recognize the shared Internet (so, it’s functionally a USB wifi dongle with very good driver support).


  • That’s…not really a cogent argument.

    Satellites connect to ground using radio/microwave (or even laser), all of which are electromagnetic radiation and travel at the speed of light (in vacuum).

    Light in a fiber travels much more slowly than in vacuum — light in fiber travels at around 67% the speed of light in vacuum (depends on the fiber). In contrast, signals through cat7 twisted pair (Ethernet) can be north of 75%, and coaxial cable can be north of 80% (even higher for air dielectric). Note that these are all carrying electromagnetic waves, they’re just a) not in free space and b) generally not optical frequency, so we don’t call them light, but they are still governed by the same equations and limitations.

    If you want to get signals from point A to point B fastest (lowest latency), you don’t use fiber, you probably use microwaves: https://arstechnica.com/information-technology/2016/11/private-microwave-networks-financial-hft/

    Finally, the reason fiber is so good is complicated, but has to do with the fact that “physics bandwidth” tends to care about fractional bandwidth (“delta frequency divided by frequency”), whereas “information bandwidth” cares about absolute bandwidth (“delta frequency”), all else being equal (looking at you, SNR). Fiber uses optical frequencies, which can be hundreds of THz — so a tiny fractional bandwidth is a huge absolute bandwidth.









  • I grew up with a hand-cranked popcorn maker. Then, in grad school, I realized that you don’t actually need any of that, just a pot with oil.

    I heat up (medium) a tiny bit of neutral oil with a few kernels until they pop. Then I add ~1/4C neutral oil and ~1/3C popcorn kernels. When I can count to ten between pops I turn it off, empty in bowl, drizzle with olive oil and add salt and nutritional yeast (and MSG if you have it).








  • It is really powerful per watt, and has a built-in UPS. Any homelab type things you could do with that? macOS+homebrew will give you a nice *NIX feel, very familiar if you’re a Linux user.

    I’m a fan of having a remote homelab computer+disk for off-site storage. This would be a good candidate in that it wouldn’t use excessive power at a friend/family’s place, but may be overkill (I use a pi3 for that).



  • Most of the time that leads to them dying.

    Well, squishing has a 100% chance of them dying. With a toddler and a baby, having them run loose sadly isn’t an option.

    We live in a very mild climate, and there’s under-deck and fence space around our house, in addition to bushes, trees, and underbrush — fairly suitable for a variety of arachnids. It’s not the same as indoors, and survival rate certainly isn’t 100%, but it’s not the death sentence of going from a climate controlled house to below-freezing outdoors.