I understand this set of comments is a digression but there is an interesting subtlety here. There is a structural connection between economic activity (in particular 'innovation') and wealth inequality. Economies that are 'stable' and 'unchanging' become stratified and people living in those economies find themselves getting slotted into 'classes' from which they cannot change.

Since I tend to be interested in systems, especially emergent ones, this is something I find interesting but recognize that the world generally considers economists more boring than accountants :-). When one discusses the 'graph going up' or 'growth' is that prices? GDP? Employment? Opportunity? I've been in conversations where several different definitions of 'growth' were being used that got confusing because there wasn't an agreement on what the y axis was measuring.