The world economy is like a supercomputer that churns through trillions of calculations of prices and quantities, and spits out information on incomes, wealth, profits, and jobs. This is effectively how capitalism works—as a highly efficient information-processing system. To do that job, like any computer, capitalism runs on both hardware and software. The hardware is the markets, institutions, and regulatory regimes that make up the economy. The software is the governing economic ideas of the day—in essence, what society has decided the economy is for.
Mark Blythe