At the time of any given decision, the CEO will generally have less than 10 percent of the information typically present in the post hoc Harvard Busi… - Ben Horowitz

Andy Grove points out in his management classic High Output Management,

Since tech became a consumer phenomenon, thousands of nontech people have come up with great ideas that use technology. But if their startups outsource their engineering, they almost always fail. Why? It turns out that it’s easy to build an app or a website that meets the specification of some initial idea, but far more difficult to build something that will scale, evolve, handle edge cases gracefully, etc. A great engineer will only invest the time and effort to do all those things, to build a product that will grow with the company, if she has ownership in the company — literally as well as figuratively. Bob Noyce understood that, created the culture to support it, and changed the world.

On the surface, it appears that if the decision is a close call, it’s much safer to go with the crowd. In reality, if you fall into this trap, the crowd will influence your thinking and make a 70-30 decision seem like a 51-49 decision. This is why courage is critical.