Until 1975, labor was the most scarce resource. Post-1975, technology was the mo...

		meric on Sept 10, 2011 \| parent \| context \| favorite \| on: Share of Income Gains by Quintile - Great Depressi... Until 1975, labor was the most scarce resource. Post-1975, technology was the most scarce resource. A bridge needs a thousand people to build but the idea of a personal computer only takes one genius to bring into fruition.