I still don't think one has to be the subject matter expert in everything a business does. Mulally should be an expert in building teams to make complex manufac

I still don't think one has to be the subject matter expert in everything a business does. Mulally should be an expert in building teams to make complex manufactured devices, and he should be hiring (or empowering) experts who understand services or tech functionality better than him. We can't hope that every leader can be a Steve Jobs or an Elon Musk :)