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Originally Posted by chuckm
I'm not sure how you are defining "biological productivity." Biological density is higher, by an order of magnitude, in temperate climates than in Arctic and Antarctic.
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Biological productivity = amount of living matter produced per unit area. You need to look at the oceans as well as the land.
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Umm... you seem to be saying that nomadism is a preferred life style? Weird.
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Why would you think so? Don't want to get into a long discussion, but just look at the differences. On the one hand you've open space, natural surroundings, varied food available for the hunting & gathering, which takes a few hours a day, the chance to do different things every day. On the other hand, your typical urban dweller of those days crammed a family into a single room, and survived on a sparse diet of mostly grains. Even into Shakespeare's time and later, streets were often open sewers, the air was full of smoke & stink, disease abounded. The great majority of people worked long hours for little return beyond survival. Humm... seems like some things haven't changed all that much :-)