Subject: Re: Morning quiz
map of what human civilization valued most at different stages over the last century.

That's only their list by revenue, not profit/assets/market cap or value. So it's perhaps more a map of what sort of thing folks have spent the most money on.

From that point of view, it would be interesting to see a list over time of the company with the highest *US source* revenue, so it's directly comparable: the king of gringo pocketbooks.

Jim