@drahardja when I was my kids’ age, i knew a lot about how computers work, because to do the cool stuff computers let you do you had to learn a bit. it was, in that sense, prerequisite. with touchscreens and GUIs that don’t expose a hierarchical file system even as folder icons in a finder, my kid knows none of that. i have to work to make the most basic things visible beneath the slickness, not magic. 1/