The doc says

Make sure you have both docker and docker-compose(>=1.24.0) installed. On Ubuntu, just run apt install docker-compose docker.io.

and I have,

$ docker-compose -v
docker-compose version 1.25.0, build unknown

However, I don’t have docker.io, because

The following packages have unmet dependencies:
 containerd.io : Conflicts: containerd
                 Conflicts: runc
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

I am a bit wary about uninstalling containerd and runc, because I have a few other docker containers running on the VPS and I don’t want to break them. What is the difference between docker.io and the regular docker package? Is it why docker-compose throws an error?

Writing on paper does not throw hard to decipher errors though

On the other hand, taking notes with a lot of equations is cumbersome with a computer, and straightforward with paper and pen. I also can’t do any serious maths without paper, e.g. playing with equations. It flows naturally with pen and paper, it is just horrible with a computer, unless you actually defer the equation solving to the computer using dedicated symbolic math software which is very useful, but that’s not always what you want to do.

I don’t think so for the reasons other have mentionned. But also, climate change is going to get us to favor low-tech ways to do things. I don’t think that the over-reliance on technology is sustainable in the long run. I wouldn’t even be surprised personnally if there were to be a global collapse of internet connectivity. It seems very fragile to me: the optical fibers in the ocean can be easily damaged, the datacenters can run out of power, political change in some countries may lead to connection to the outside to be severed or unusable. That is one of the reasons also why I don’t personnally trust big platforms to store personal data that I wish to save.

Do we know if it is really used infrequently, or does it just happen that it is not used during the events pictured on screen? There is no dialog where a character claims that it is used infrequently?