Friedman Was Right, Just Mostly Misquoted.

Milton Friedman’s famous one-liner that anchors half the inflation debates on financial television leaves out the part where the actual economics live. Once you put it back in, the doomist case gets a lot smaller.

key takeawys

Per Bylund recently wrote a sharp piece for The Daily Economy arguing that CPI and GDP have become Goodhart’s Law in action. When a measure becomes a target, it ceases to be a useful measure. He has a point, and we’ll come back to it. But the bigger problem with the inflation conversation isn’t really about CPI. It’s about the way the famous Milton Friedman inflation quote gets weaponized by people who almost certainly haven’t read past the comma.

The line you always hear is, “Inflation is always and everywhere a monetary phenomenon.” Full stop. Print money, get inflation, or corporations cause inflation. Then, the doomers grab a chart of M2 and a warning about hyperinflation.

That’s not what Friedman actually said.

What Friedman Actually Said

The complete sentence is,

“Inflation is always and everywhere a monetary phenomenon in the sense that it is and can be produced only by a more rapid increase in the quantity of money than in output.”

That trailing clause changes everything.

The monetary doomists drop it because it complicates the bumper sticker. But “than in output” is where the real economics is.

Friedman was reasoning from the equation of exchange, MV = PQ. Money times velocity equals prices times real output. It’s an identity, not a theory. Where it gets interesting is when you ask which variable does the work. Friedman’s claim was that, over the long run, sustained changes in the general price level can come only from money growing faster than the economy’s productive capacity. Supply was already inside his framework. A collapse in output with steady money produces the same price effect as money growth with steady output.

So the “supply and demand drives inflation” intuition isn’t competing with Friedman. It’s living inside his model. The question is whether the imbalance persists, which depends on whether monetary policy accommodates it.

The Distinction Everyone Misses

Friedman drew a hard line between relative price changes and sustained inflation. That distinction is what gets lost in the modern debate.

When oil prices spike due to a war, consumers spend more on energy and necessarily less on everything else. Relative prices shift. Energy goes up, discretionary goods come under pressure. The general price level doesn’t have to rise unless monetary policy expands the money available to spend on everything. Without that accommodation, you get a one-time level shift in the price index, and then prices stabilize. That’s not inflation in Friedman’s sense. That’s a relative price adjustment.

This is why Friedman could call inflation “a monetary phenomenon” without being naive about supply shocks. He simply argued that supply shocks alone don’t produce sustained inflation. They produce volatility around a level. The trend in the level comes from the money side.

Here’s the problem with how this gets used today. Both the inflation alarmists and the cable news pundits flatten the distinction. The doomists see any money growth and forecast persistent inflation, ignoring that velocity might collapse and absorb the expansion. The pundits see any price spike and call it inflation, ignoring that without monetary accommodation, it’s likely to fade.

The 1970s are the clearest historical illustration of why both supply and money must be present for sustained inflation. Most people remember the decade as an “oil shock” story, but that’s only half right. CPI was already running hot before the 1973 Arab oil embargo and again before the 1979 Iranian revolution.

the 1970s loose money

Money supply growth had been excessive for years, and interest rates had been held too low. The oil shocks didn’t create inflation out of nothing. They pushed an already-loosened cork out of an already-pressurized bottle. Lacy Hunt has been making essentially this argument about the current setup, and he’s right to flag the parallel. A supply shock landing on top of loose money is the configuration that produces a sustained inflation problem. A supply shock landing on a disciplined monetary base produces a level shift that fades.

Read more: Tech Rally Grounded in Fundamentals