> Something being on a lower level doesn't inherently mean superior. You can go in any direction on the scale or spectrum. Do you know how exactly atoms behave

> Something being on a lower level doesn't inherently mean superior. You can go in any direction on the scale or spectrum. Do you know how exactly atoms behave that computers are made out of? This is a false equivalency; no one is suggesting that it’s necessary or even useful to understand electron drift to write programs. It can, however, be extremely useful to understand memory allocation and retrieval, and how your languages’ abstractions over it work. Take UUID generation, for example. I needed to generate millions of them for a tool I’m building, and I found that it was massively slower on Linux than Mac, even taking raw CPU performance into account. I eventually tracked this down [0] to BSD using arc4random, while until a fairly recent glibc release, Linux was using ul_random_get_bytes. Most people are never going to need or notice this difference, because for a single UUID, it simply doesn’t matter. But it did for me, and the only reason I was able to figure it out and solve it was by having a passable understanding of implementations buried behind abstractions. [0]: https://gist.github.com/stephanGarland/f6b7a13585c0caf9eb64b035b15b9882 https://gist.github.com/stephanGarland/f6b7a13585c0caf9eb64b...