One function of the income gap is that the people at the top of the heap have a hard time even seeing those at the bottom

One function of the income gap is that the people at the top of the heap have a hard time even seeing those at the bottom. They practically need a telescope. The pharaohs of ancient Egypt probably didn't waste a lot of time thinking about the people who built their pyramids, either. OK, so it's not that bad yet — but it's getting that bad.