Leaders and tools
A friend wanted to develop expertise in a field by getting more degrees in school. As I wrote in "Programmers work with computers and leaders work with people," people with functional skills can solve problems in that functional area: carpenters can solve problems with wood, plumbers can solve problems with pipes, and so on. Leaders can solve problems with people. Expertise is nice, but if you have leadership skills, you can hire experts in fields you need problems solved in. If you don't have leadership skills, you may end up the tool of someone who does, helping them achieve their…