Mission statements, synergies, strategies, visions—they are often ambiguous to the point of being meaningless. Naturally sticky ideas are full of concrete images —ice-filled bathtubs, apples with razors—because our brains are wired to remember concrete data. In proverbs, abstract truths are often encoded in concrete language: “A bird in hand is worth two in the bush.

The surprising lesson of this story: Highly creative ads are more predictable than uncreative ones. It’s like Tolstoy’s quote: “All happy families resemble each other, but each unhappy family is unhappy in its own way.” All creative ads resemble one another, but each loser is uncreative in its own way.

Unexpectedness, in the service of core principles, can have surprising longevity.

DARPA’s surprising strategy has a shape and structure common to all good strategy. It follows from a careful definition of the challenge. It anticipates the real-world difficulties to be overcome. It eschews fluff. It creates policies that concentrate resources and actions on surmounting those difficulties.

Here, as in so many situations, the required actions were not mysterious. The impediment was the hope that the pain of those actions could, somehow, be avoided. Indeed, we always hope that a brilliant insight or very clever design will allow us to accomplish several apparently conflicting objectives with a single stroke, and occasionally we are vouchsafed this kind of deliverance.