I think that the critical skill which intelligent people don't have but which clever people have is simply knowing what is important. Unfortunately, the best w

I think that the critical skill which intelligent people don't have but which clever people have is simply knowing what is important. Unfortunately, the best way to learn that skill is through struggle. Too many intelligent people these days haven't experienced struggle in their careers (aside from the artificial struggles of navigating company politics). Many went through university (often paid for by their parents), then as soon as they finished, they immediately got a huge salary at a big corporation. Many were never in a situation such that their employer could go out of business and they would lose their job and livelihood if they failed to deliver high quality work in a reasonable time. Also, the skills that you learn in dealing with company politics are counter-productive.