... life is broken down into these stages: you're born and you don't know how anything works; gradually you find out how everything works; technology evolves and slowly there are a few things you can't work; at the end, you don't know how anything works.
Rita Rudner (2008). “I Still Have It . . . I Just Can't Remember Where I Put It: Confessions of a Fiftysomething”, p.1, Crown Archetype