First-To-Second Game Improvement aka Daugherty's Law

Most college teams played their first game of the season over the weekend, though a handful played during Week 0. With teams having a game under their respective belts, we will soon be in a position to assess one of football's great bromides, that teams see their greatest improvement between their first and second game of the season.

I searched for the origins of this supposed axiom, thinking it originated before leather helmets. However, I did not find any references to this line of thinking unt...