Valleywag editor Nick Douglas was called in to CNBC this week to tape some background for a story about "the yacht index" — the quick-and-dirty economic theory by Slate writer Daniel Gross. His article, "The CEO Bought a Yacht? Then it's time to sell," inspired our equally quick-and-dirty chart.

As I told CNBC, I whipped up my article in five minutes. I figured Gross did the same. The man does a great job of taking this seriously on CNBC's On the Money. (In the intro, I'm talking about Larry Ellison, Oracle founder and owner of the world's biggest yacht.)

It's no Long Tail Theory, but it'll do.

The CEO Bought a Yacht? Then it's time to sell. [Slate]
Earlier: The State of Ships: How yachts kill companies [Valleywag]