Connections

Frederick Soddy, a chemistry Nobel laureate on the economy and laws of thermodynamics.

He offered a perspective on economics rooted in physics — the laws of thermodynamics, in particular. An economy is often likened to a machine, though few economists follow the parallel to its logical conclusion: like any machine the economy must draw energy from outside itself. The first and second laws of thermodynamics forbid perpetual motion, schemes in which machines create energy out of nothing or recycle it forever. Soddy criticized the prevailing belief of the economy as a perpetual motion machine, capable of generating infinite wealth — a criticism echoed by his intellectual heirs in the now emergent field of ecological economics.

... Soddy would not have been surprised at our current state of affairs. The problem isn’t simply greed, isn’t simply ignorance, isn’t a failure of regulatory diligence, but a systemic flaw in how our economy finances itself. As long as growth in claims on wealth outstrips the economy’s capacity to increase its wealth, market capitalism creates a niche for entrepreneurs who are all too willing to invent instruments of debt that will someday be repudiated. There will always be a Bernard Madoff or a subprime mortgage repackager willing to set us up for catastrophe. To stop them, we must balance claims on future wealth with the economy’s power to produce that wealth. How can that be done?

Soddy distilled his eccentric vision into five policy prescriptions, each of which was taken at the time as evidence that his theories were unworkable: The first four were to abandon the gold standard, let international exchange rates float, use federal surpluses and deficits as macroeconomic policy tools that could counter cyclical trends, and establish bureaus of economic statistics (including a consumer price index) in order to facilitate this effort. All of these are now conventional practice. Soddy’s fifth proposal, the only one that remains outside the bounds of conventional wisdom, was to stop banks from creating money (and debt) out of nothing. Banks do this by lending out most of their depositors’ money at interest — making loans that the borrower soon puts in a demand deposit (checking) account, where it will soon be lent out again to create more debt and demand deposits, and so on, almost ad infinitum.