Except that people didn't live under a capitalist economic system with stock exchanges, shares, and private property for the 10000 years of settled urban existence before the 18th century, so, yeah -- apparently "economics is the same" isn't true.
I suggest you read A Splendid Exchange. Although humanity didn't have the exact same economic system as today's, it's a mistake to think there weren't complex systems in place in the past.
I never said anything of the sort that there were not complex systems in place. Precisely because I can see that I can say that the system we have now is not inevitable, immutable, or eternal.
