How We Design and Plan at DataXu: “Gruhl’s Rule”
Willard Simmons

Bill, really interesting. Gruhl’s graph looks like a learning curve (aka “experience curve”) transposed across a horizontal axis. Makes sense since you might expect costs to fall with either experience or preparation. Do you know what the underlying dynamic is — why does the curve sort-of converge to 10% as the asymptote? I think the BCG guys who came up with the experience curve thought the axes (unit savings vs. experience) defined a power law relationship. I’m not sure why that is, or why a curve like this would flatten out at 10%

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