## Exponential Decay of Importance

What is the magic of 70-20-10? This breakdown comes up so frequently in life. In essence, I think it represents a rounded up *binary exponential decay*. I’ve shown this decay in the graph above. A ‘true’ binary decay – where the second is half of the first and the third is half of the second all adding up to 100% (since we are dealing in proportions) – would be 56-28-14.

Exponential decay implies an ‘acceleration’ in the decline of importance. The importance doesn’t just drop. It drops by an increasing amount. The 70-20-10 Principle is in essence saying “*The most important thing is twice as important as the next most important thing. As is the third most important. And that leave pretty much no importance to anything after 3 things*.”

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