"Everything" was invented by the 70s (and a lot in the 60s); unfortunately the huge stinking popularity of GUIs combined with relentless drum beats of the latest code being due out yesterday took us on a decades-long detour through what turned out to be some bad ideas (OO in the "model the physical world" sense, which GUI frameworks deceptively made appear to work, event-based systems which are simple spaghetti-code redux in the Dijkstra sense of "spaghetti code").