There's seriously so much truth in that old joke.
No matter what the initial challenge is, it's a CD's responsibility to dig deeper and ask the hard questions that help solve the real business problems. And, they need to be able to lead, inspire, partner, and persuade everyone to take a chance, and do something special. It's something that I bring to every role, no matter the title.
So, let me know if you need some help changing a bulb.