I use Debian testing for… 20 years? I had serious problems with it. Twice. Nothing unrepairable, but still I needed another machine with internet to fix the problem. I suppose that is ok stability-wise for 20 years.

Because the wrong drivers, but they work at least…

It’s not only for operating systems, though.

What else? I can hardly imagine using Linux for something except OS.

https://en.wikipedia.org/wiki/International_Phonetic_Alphabet

1.21 to 1.211

So +190 increment is totally ok for you, but +1 sometimes “didn’t make sense”. IT DOESN"T MAKE ANY SENSE! Oh, and you can use letters. 1.21 -> 1.21a looks MUCH more explanatory for your purposes than “+1 is too harsh increase, so I’ll increase on 190!”

99% of machines use multiple users on their OS. Different users for different programs is a widespread Unix-like OS approach to security.

Explanation for dummies: Linux is a launcher of computer programs.

Linux is a kernel for OS. See, I told you what Linux is. I did it!

7899999999998765

Even if a developer would make a commit every second, it would take 250 million years to reach version 0.0.7899999999998765