It seems like at this point, in order to make all the systems for self-sufficiency truly effective and worth the bother, we have no choice but to build on a HUGE scale. We just can't keep doing that, though. We have to correct what's already been built before we eat up more resources and land.
The other thing is, we need to start working on ways to make this viable on a very small scale, on the scale of a small, single family residence. I refuse to believe that isn't possible.
P.S. I'm also VERY, VERY excited about this:
--New York Post