Picked up an old Milwaukee RR book of stations circa 1948. As I read through all the station names and towns, I thought of all the agents manning them, then the dispatchers above them, then about all the engineers, firemen, conductors, the backshop forces, ROW maintenance crews, then of course there are all the cars engines fuel logistics, and backoffice personnel etc, until my head hurt just thinking how many and how much was involved just to get freight/people from point A to B.
It is a wonder RR made any money at all, that it wasn't one gigantic ponzi scheme !!
Idle musing on a nice Wednesday, and sure this topic has been beat to death here and in numerous on-line forums, books and pamphlets.