It Could Be So Much Better

The future masters of technology will have to be light-hearted and intelligent. The machine easily masters the grim and the dumb.

—Marshall McLuhan, 1969

I love this quote. It roughly fits what I’ve seen. But while it seems clear that being ‘dumb’ probably dooms you to being mastered by the first anything (person, cause, addiction, …) you encounter, why would being light-hearted have anything to do with it?