In a message dated 9/23/1999 3:52:18 PM Pacific Daylight Time, arkuat@idiom.com writes:
<< Also, people on the streets at all hours are an effective deterrent
against crime. (ref: Jane Jacob's, The Death and Life of Great
American Cities, 1962). This does not happen in the suburbs because
of the low dwelling densities (and low business densities also),
so people tend to stay indoors at night in most suburbs I've
observed. This would be a very unpleasant lifestyle for me.
>>
In a fully developed nano technological society, matter will be almost synonymous with "thought.'" What you dream up, you can make. What "underground" looks like: that is up to your designers. Of course they will need to provide safety & comfort above and beyond that which surface dwellers enjoy - or else no one will move there.