“…I really don’t want to have to wipe the thing because it’s running a headless OS”

I feel like logging in as root on a headless system and hoping you type the command(s) to restore functionality is a rite of passage.

AWS was recently “having issues” due to the Iran situation — same thing I wonder?

After reading a few of these I feel like I was either a very boring grad student, or my professors were all very chill. (Or maybe just subject to male privilege.)

A few run-ins with IT, but I don’t think I ever got nasty letters from professors…

I’ve been pleased with it. Family is very relaxed about projects like this, but yeah it’s low power draw. I don’t think I have anything special set up but the right thing to do for power would be to spin down drive when not in use, as power is dominated by the spinning rust.

Uptime is great. Only hiccups are that it can choke when compiling the ZFS kernel modules, triggered on kernel updates. It’s an rpi 3/1GB RAM (I keep failing at forcing dkms to use only 1 thread, which would probably fix these hiccups 🤷).

That said, it is managed by me, so sometimes errors go unnoticed. I had recent issues where I missed a week of rsync because I switched from pihole to technitium on my home server and forgot to point the remote rpi there. This would all have been fixed with proper cron email setup…I’m clearly not a professional :)

Not the same, but for my Immich backup I have a raspberry pi and an HDD with family (remote).

Backup is rsync, and a simple script to make ZFS snapshots (retaining X daily, Y weekly). Connected via “raw” WireGuard.

Setup works well, although it’s never been needed.

Indeed. The quoted passage made it sound like this was unique naval terminology, as opposed to standard nautical terminology. It’s not wrong, I just thought it was worded peculiarly.

(It’s not just the Navy — they’re called “heads” on recreational vessels, too.)

F-Zero X for N64 is, for me, the pinnacle of racing games (works great on emulation).

It’s fast, smooth, and pretty straightforward. It even had a random map mode — they were sometimes a bit funky, but it was fun when you wanted something new.

Also, 1.21GW is famously used in Back to the Future.

That almost makes sense, but pi radians = 180°

Right, a triangle “has 180deg,” like I said.

in which case π÷n is infinitesimally small. In other words, substituting infinity for n would be incalculable

That’s not how limits work. Substitution is not the same as taking the limit.

infinite and infinitesimal numbers are impossible to express rationally.

That’s not true at all. https://en.wikipedia.org/wiki/1/2_%2B_1/4_%2B_1/8_%2B_1/16_%2B_⋯

It’s not about colloquialism or language

Having one word (or phrase) with two meanings is a property of language.

That’s exactly my point, there are two different colloquial ways of talking about angles. I am not claiming there is a mathematical inconsistency.

Colloquially, a “triangle has 180 degrees” and a “circle has 360 degrees.” Maybe that’s different in different education systems, but certainly in the US that’s how things are taught at the introductory level.

The sum of internal angles for a regular polygon with n sides is (n-2)×pi. In the limit of n going to infinity, a regular polygon is a circle. From above it’s clear that the sum of the internal angles also goes to infinity (wheres for n=3 it’s pi radians, as expected for a triangle).

There is no mystery here, I am just complaining about sloppy colloquial language that, in my opinion, doesn’t foster good geometric intuition, especially as one is learning geometry.

I don’t think we’re talking about the same thing.

If you take a circle to be the limit of a polygon as the number of sides goes to infinity, then you have infinite interior angles, with each angle approaching 180deg, as the edges become infinitely short and approach being parallel. The sum of the angles is infinite in this case.

If you reduce this to three sides instead of infinite, then you get a triangle with a sum of interior angles of 180deg which we know and love.

On the other hand, any closed shape (Euclidean, blah blah), from the inside, is 360deg basically by definition.

It’s just a different meaning of angle.

See, for example, the internal angle sum, which is unbounded: https://en.wikipedia.org/wiki/Regular_polygon

Triangle, “has 180 degrees,” subtends 360 degrees.

Circle, “has 360 degrees,” the sum of the interior angles is infinite.

(I’m not actually confused, it’s just that “a circle has 360 degrees” and “a triangle has 180 degrees” is a little annoying in that they use different definitions.)

Where energy efficiency isn’t a concern (maybe a blender or a toaster) this sounds nice, but otherwise…well…lots of wasted energy.

(Of course, it all has to be balanced against the cost of manufacturing/disposing.)

Heat pumps want low temperature differences, so I’m not sure you’re going to have much luck getting a heat pump oven to 475F/~250C.

Give turnips a shot! Make sure to add a beet so they get that almost neon purple color (ok, really “argon purple”) like you find in middle eastern restaurants.

High frequency is generally bad for transmission line losses, so getting power from A to B is better at lower frequency — DC is a great option here.

If we switched to DC, many things would still flicker though as they would presumably use switching power supplies, but those could be relatively high frequency like you said.

Interestingly, airplanes use 400Hz, as transmission over distance doesn’t matter, and transformers can be made much smaller/lighter.

The history of the smallpox vaccine is fascinating iirc — milk maids, orphans-as-storage+transportation, really crazy stuff.

And after reading about it, one thing that’s neat is that it makes sense. You don’t need to talk about homeopathic “water memory” or whatever, and you don’t even need a solid understanding of biology — the whole thing just kinda…makes sense.

And yet, here we are…

OP needs to stop Chase-ing up votes.

Yeah, good point. The “app setup” is built into android and iOS as far as I can tell (generating matter credentials, etc.). Better than 3rd party IMHO but not ideal, and a nonstarter for a lot of folks. Hopefully HA will come out with their own onboarding process at some point.