This post by Steve Bosserman really needs some considered feedback.

Especially his idea of "leakage analysis". I think we are in a position to develop tools and processes that can address this.

"But in fact, small-scale agriculture is almost universally more productive than large-scale agriculture. The prevailing techniques used in American-style agribusiness were not introduced primarily to economize on land or maximize output per acre. After all, in most parts of the country the largest agribusiness operations have had privileged access to large tracts of land, going back in many cases to land grants at the time of first European settlement. For example, in California many of the largest operations were built on expropriated haciendas dating from Mexican or Spanish colonial times.

From IFTF Ten Year Forecast:

Dr. Martin P. Schreibman has been growing tilapia for years in tanks in his lab at the Aquatic Research and Environmental Assessment Center of Brooklyn College. "You could set a tank up in your basement and grow enough fish to pay your rent," he stated in an article in The New York Times, and it may be true. His tanks, while still largely experimental, show that sustainable aquaculture is possible -- even in megacities.
Abstract:

Cytokinins (CK) are a class of plant growth substances (plant hormones) that promote cell division. They are primarily involved in cell growth, differentiation, and other physiological processes. Their effects were first discovered through the use of coconut milk in the 1940s by Adicott at the University of Wisconsin-Madison named Folke Skoog. [1]

"If you have a small garden but big ambitions, you can grow fruit without having one or two trees dominate the entire area," says Hooper, who, along with caring for his orchard, owns a nursery dedicated to espaliered fruit trees and ornamentals. Espalier trees produce more fruit per foot than do ordinary fruit trees-mature forms reap from 30 to 60 pounds of deli cious-tasting fruit, from apples and pears to peaches and pomegranates.