Prometheus pissed off Zeus because Prometheus liked us people in the same way that some people like dogs or kittens. He gave us fire and a lot of encouragement. Zeus, like so many godlike entities, wasn't that fond of us. He had a basic belief that we were dangerous, best not to encourage us, better to beat the crap out of us occasionally. The Promethean Gap was an idea explored in a book by Gunther Anders, Hannah Arendt's first husband, called The Outdatedness of Human Beings, or the Antiqueness of Human Beings. It was an understanding of how dwarfed and insufficient, how inadequate we'd become by the gap between us and technology.
