Perfect ergodicity means that each one of us, should he live forever, would spend the proportion of time in the economic conditions of segments of that entire cross-section: out of, say, a century, an average of sixty years in the lower middle class, ten years in the upper middle class, twenty years in the blue collar class, and perhaps one single year in the one percent. (Technical comment: what we can call here imperfect ergodicity means that each one of us has long term, ergodic probabilities that have some variation among individuals: your probability of ending in the one percent may be higher than mine; nevertheless no state will have a probability of zero for me and no state will have a transition probability of one for you).