Could YOUyou restart and run a nuclear power plant? If you're not a pro, you don`tdon`t even know yourself. So at best (worst) average Joe would believe that he can do it. And then he would most likely find out that he was wrong.
edit to clarify: Check against yourself. Can you do it? yes/no? Compare your pplant skills to average joes skills. Are you better/worse/same?
yes/better -> he cannot do it
yes/worse -> he can do it
yes/same -> up to your story
no/better -> he could never ever do it
no/worse -> he might have a chance
no/same -> he cannot do it