But isn't that why there are two of you? What I learned--okay, 40 years ago--was that if you had a problem, the captain gave either himself or his first officer the job of flying/controlling the aircraft, while the PNF got out the emergency checklists, sent necessary comms and did the troubleshooting. Try to both do it and you can put an entire L-1011 into the Everglades without even knowing it....