Today, if the CEO thinks it's a good idea, it's done everywhere; if the CEO thinks it's a bad idea, it's done nowhere. We ought to be more agnostic and open to learning things that we didn't expect - and the only way to do that is to try things and be open-minded about how well they are working. And third, evidence-based management involves reading and learning - just like doctors do - and to do so not just in school but afterward, as well.

Lyndon Johnson (with Abraham Lincoln close behind). Johnson was able to get things done, to read other people, and to adjust his own approach accordingly. One of the reasons he has so fascinated biographer Robert Caro over the years is Johnson's consummate skill in acquiring and using influence.

People who don't have as much power as they would like often begin by attributing their difficulties to the environment - competitors, bosses, economic circumstances, and so forth. But in reality people are customarily their own biggest impediment to being as powerful as they would like.

Leaders are not modest, and more importantly, the extensive social science research on narcissism, self-promotion, and similar constructs shows that these qualities and behaviors are useful for getting hired, achieving promotions, keeping one's job, and obtaining a higher salary.

You are more likely to acquire power by narrowing your focus and applying your energies, like the sun's rays, to a limited range of activities in a small number of domains.

So, the three qualities of a workplace that would develop people would be information sharing, investing in the training of the workforce, and giving employees the ability to use their training and information to make decisions.

Advocates of knowledge management as the next big thing have advanced the proposition that what companies need is more intellectual capital. While that is undeniably true, its only partly true. What those advocates are forgetting is that knowledge is only useful if you do something with it.