“Experience teaches nothing. In fact there is no experience to record without theory… Without theory there is no learning… And that is their downfall. People copy examples and then they wonder what is the trouble. They look at examples and without theory they learn nothing.”
Without Theory, There Is No Learning
From W. Edwards Deming’s 1991 public television interview for The Deming of America, a 57-minute special based on an all-day unscripted interview with Deming, produced by Petty Consulting Productions and hosted by Priscilla Petty. The Deming Institute’s quote archive catalogs the passage under three of his standing categories: Experience, Learning, Theory of Knowledge. A nearby, differently-worded line also circulates under his name: “Experience by itself teaches nothing… Without theory, experience has no meaning…”
The argument cuts against the common claim that experience is the best teacher. Deming’s point is that experience without a theory to interpret it is just a log of events. A theory specifies what should happen and why; running an operation against that prediction is what turns a result into evidence. Without the prediction, a good quarter and a bad quarter look like the same kind of fact, and copying a competitor’s tactics reduces to imitation without a model of what made the tactic work for them or whether your situation fits.