Cities may be engines of innovation, but not everyone thinks they are beautiful, particularly the megalopolises of today, with their sprawling rapacious appetites. They seem like machines eating the wilderness, and many wonder if they are eating us as well. Is the recent large-scale relocation to cities a choice or a necessity? Are people pulled by the lure of opportunities, or are they pushed against their will by desperation? Why would anyone willingly choose to leave the balm of a village and squat in a smelly, leaky hut in a city slum unless they were forced to?
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Well, every city begins as a slum. First it’s a seasonal camp, with the usual free-wheeling make-shift expediency. Creature comforts are scarce, squalor the norm. Hunters, scouts, traders, pioneers find a good place to stay for the night, or two, and then if their camp is a desirable spot it grows into an untidy village, or uncomfortable fort, or dismal official outpost, with permanent buildings surrounded by temporary huts. If the location of the village favors growth, concentric rings of squatters aggregate around the core until the village swells to a town. When a town prospers it acquires a center