Physical media is the only media you really own.

Hard disagree. You can own any file encoded with an open standard. And it’s easier to index, search, manipulate, back up, etc. It feels more like owning than having the data on a micrometer-thick metal layer sandwiched in a fragile plastic disc that can easily scratch or discrot. There is a reason people have been ripping CDs since PC CD drivers became a thing.

Nah, that shit will probably outlive all of us. As the last humans are struggling to survive in the hot hell they used to call earth, someone somewhere will be making a device with USB A <-> Micro B cable included in the box.

Unless digital artists are replaced with AI entirely, I don’t see that happening. iPads (unfortunately) are kind of the golden standard there. If anything I expect drawing tablets without screens to disappear.

If burned properly they hold storage for a very long time without data loss

They also need very particular storage conditions (temperature and humidity in particular), otherwise they will discrot. But yeah they are likely to store data for longer than solid-state media at least.

Honestly I don’t think that’s tru. There were very few kids who truly tinkered with their computers in the old days too - first because not many kids had computers in the first place, and then because computers started being useful without any tinkering. There are still a lot of youths (12-16) today who are flashing LineageOS on their phone or installing Linux on their Chromebook, or whatever. I know because they keep flooding the NixOS Telegram chat that I’m managing - and I try to welcome them with open arms!

smartphones are a black box.

Many Android phones still have a bit of that tinkering ability to them (you kinda have access to the file system, and you can root them/flash custom android distros), but it’s quickly diminishing because (1) OEMs are locking the bootloaders, (2) it’s getting harder and harder to get hardware working without proprietary OEM hacks, (3) bank apps and other proprietary garbage that’s becoming a necessity in modern times refuses to run on an unlocked phone.

I just hope that something like GNU Taler (which keeps buyers’ privacy and forces sellers to report their earnings properly) becomes the norm, as opposed to the proprietary plastic card transactions we have now. I myself am guilty of switching to that system because cash is just insanely inconvenient, but I also recognize it’s pretty bad.

While 3D geometry is more difficult for me than 2D, I could almost immediately tell that the answer is no, there are infinitely many points H that satisfy this. The reason it’s unintuitive is that our intuition about what “perpendicular” means comes from 2D and poorly translates to 3D.

The most intuitive explanation I can muster is this: imagine all possible planes that pass through both A and P. It should be obvious that there are infinitely many of them (I visualize it as a plane “rotating” around the AP axis). Each of these planes intersects the given plane since it passes through A. Think of the intersection line. It never passes through P (unless P is on the plane), so it is always possible to draw a perpendicular line from P to that intersection line. With one exception (when the perpendicular line falls on the A point), the point where the perpendicular falls satisfies the conditions for H. (I think all such points actually form a circle with AP’ as the diameter, where P’ is the parallel projection of P to the given plane, but I’m not 100% sure)

Eh, honestly it’s, like, functional (you can recognize it and draw a facsimile of it in 3 minutes with two pens). I wouldn’t call “it pretty good”.

Good for the environment? I recycle everything I can. I don’t use plastic bags or single-use cups. I avoid using heating in the winter to save on CO2 emissions (used it for 2 days this winter when my gf was sick). I stave off aircon in the summer for as long as I can to save electricity. I’m vegan (mostly because of ethical concerns but also because meat is awful for the planet in general). I avoid using my car when there’s an alternative (cycling/public transit).

Good for me? I do at least some exercise (stretching, workout, jogging, cycling) every workday and hike on the weekend. I brush my teeth twice a day, floss weekly, and get a full dental cleaning annually, and because of this (and genetic luck I suppose) I never had any issues with my teeth (don’t have even a single filling). I don’t drink alcohol or smoke at all. I avoid caffeine and sugars when possible.

I feel privileged to be able to form those habits, and also often blame myself that I don’t do better. I’m addicted to fat and carbohydrate-heavy foods, can’t bring myself to clean the apartment with any regularity beyond the most necessary, and can’t form a habit of regularly reading books. Sometimes I wonder how other adults manage when they have a 9-5 office job with commute times, kids, etc.

Yep, but the rest can mostly be replaced with a mailing list. Or, if you’re allergic to email, there’s also https://forgejo.org/.

Federated browsers

That’s literally just regular browsers, you can interact with any one of billions of webservers

Federated github

Git is federated by nature, you can add as many remotes as you wish and push/pull to all of them. Add in a mailing list for issue tracking and “pull requests” (patch submissions) and you’re golden. You can look up sourcehut to self-host a well-integrated combination of the two.

Federated hosting providers

Not sure what exactly you mean by this but maybe take a look at IPFS, although it’s more P2P then federation.

Federated internet

Internet is already fairly federated by nature - most commonly used protocols in the OSI stack are open and you can host your own components of critical infrastructure. Getting others to interact with them might be difficult due to security & privacy issues.