““Logistics is in fact a key aspect of military planning, and Cook is responsible for Apple’s operational excellence. For example, when Apple knew it would move away from disk drives in its iPods and MacBook Air notebooks, it invested in billion-dollar forward purchases of flash memory. Cook’s supply-chain organization executed this masterstroke, which accomplished the trifecta of securing Apple’s supply, locking in the lowest price, and hobbling the competition’s access to components. Such back-of-the-shop excellence at a company known for its creative flair is a rare example of what researchers Charles O’Reilly of Stanford and Michael Tushman, a professor of organizational behavior at the Harvard Business School, refer to as “ambidexterity as a dynamic capability.” In other words, it reflects the ability of a top-performing company to be simultaneously efficient and innovative.””