What drives your economic engine. All the good-to-great companies attained piercing insight into how to most effectively generate sustained and robus… - Jim Collins

So, the question of Why greatness? is almost a nonsense question. If you're engaged in work that you love and care about, for whatever reason, then the question needs no answer. The question is not why, but how.

The Hedgehog Concept (Simplicity within the Three Circles). To go from good to great requires transcending the curse of competence. Just because something is your core business — just because you’ve been doing it for years or perhaps even decades — does not necessarily mean you can be the best in the world at it. And if you cannot be the best in the world at your core business, then your core business absolutely cannot form the basis of a great company. It must be replaced with a simple concept that reflects deep understanding of three intersecting circles.

coherence, the magnifying effect of one factor upon another. In reading about the flywheel, I couldn’t help but think of the principle of coherence.” However you phrase it, the basic idea is the same: Each piece of the system reinforces the other parts of the system to form an integrated whole that is much more powerful than the sum of the parts. It is only through consistency over time, through multiple generations, that you get maximum results.