“Each of us assumes everyone else knows what HE is doing. They all assume we know what WE are doing. We don't...Nothing is going on and nobody knows

Broadly accurate. Obviously someone who has spent an entire lifetime studying a single task will be an expert at something, but when it comes to more 'soft skill' or abstract work, people are almost always clueless. Particularly leaders. Nothing like power to turn someone into a blithering idiot.