It must capture the sequence that ignites and accelerates momentum. - Jim Collins

For a truly great company, the Big Thing is never any specific line of business or product or idea or invention. The Big Thing is your underlying flywheel architecture, properly conceived

A Hedgehog Concept is a simple, crystalline concept that flows from deeply understanding the intersection of the following three circles: (1) what you’re deeply passionate about, (2) what you can be the best in the world at, and (3) what drives your economic or resource engine.

There are two possible explanations for a stalled or stuck flywheel. Possible explanation #1: The underlying flywheel is just fine, but you’re failing to innovate and execute brilliantly on every single component; the flywheel needs to be reinvigorated. Possible explanation #2: The underlying flywheel no longer fits reality and must be changed in some significant way. It’s imperative that you make the right diagnosis.