The professor might care to read the NTSB report of Colgan Air 3407, and may then come to the realisation that Mud Skipper's assertion does indeed hold water.
An identified causal factor in the accident was the crew's commuting induced fatigue. 68% of Newark based Colgan pilots, including the two involved in the accident, were commuters. The reason for such a high proportion of commuters: the high cost of residing in the Newark area combined with the low wages company pilots received.