How someone can see what others have not, or what they have ignored, and thereby discover a pivotal objective and create an advantage, lies at the very edge of our understanding, something glimpsed only out of the corner of our minds. Not every good strategy draws on this kind of insight, but those that do generate the extra kick that separates “ordinary excellence” from the extraordinary.

Unless leadership offers a theory of why things haven’t worked in the past, or why the challenge is difficult, it is hard to generate good strategy.

A great deal of strategy work is trying to figure out what is going on. Not just deciding what to do, but the more fundamental problem of comprehending the situation.

In creating strategy, it is often important to take on the viewpoints of others, seeing how the situation looks to a rival or to a customer. Advice to do this is both often given and taken. Yet this advice skips over what is possibly the most useful shift in viewpoint: thinking about your own thinking.

For example, people tend to place more weight on vivid examples than on broad statistical evidence.