[Grustaf]

Everyone should learn the basics of business, but people have different talents and if you're born an engineer chances are you'll never be a very good salesman, and vice versa. Much better to focus on what you enjoy and do best, and find a business guy to focus on that part.

Obviously, if you are both well rounded and have some understanding of the other's area that will make things more efficient but don't try to BE the other.