In strictly economic terms, sprawl is inefficient. Spread people out, and it takes them longer to drive where they need to go, and it costs them more in gas money to get there. Disperse a few people over a lot of land, and that land is used inefficiently, too. Then give those people roads and sewers — you’d need a lot more of both to serve 20... - http://jenn2d2.tumblr.com/post...