Silicon Valley was built on amazing products, not on stellar leadership skills. In fact, veterans of some of the world’s most successful tech companies often look with skepticism, even disdain, on efforts to build strong management skills. The premise is that all energy should be focused solely on turning fabulous ideas into hyper growth. It’s true that if a start-up fails — or is sold — the need for enduring leadership may never arise. And in the earliest stages of a company, the need to organize, motivate and inspire large groups of people to accomplish shared goals may not be obvious.