A glance isn't needed to see if a college football stadium is packed on gameday.
All it takes is the sound of a crowd's sustained crescendo and the swell of noise from tens of thousands to create a unique feeling that's rarely experienced at sporting events.
However, a glance is useful when the sounds are absent. While a stadium can announce a gaudy attendance total for a game, the sight of empty seats confirm that number isn't accurate.
Even a state like Texas, where football permeates the culture from border to border, isn't immune to the attendance trend across the country.