Another obvious thing to emphasize again is that what the job needs is not 'a good manager', but a good railway manager. Railways (at least properly run ones that serve both freight and passengers) are very complex systems, with lots of interdependencies, which a manager should know or his cost-benefit analysis isn't worth anything. Only the command structure of the workforce is hierarchic, but not 'production'.

_{*Lunatic*, n.
One whose delusions are out of fashion.}