The SEC Network has been showing classic games played by conference schools from as far back as the 1970s.
I've particularly enjoyed watching football games played nearly 40 years ago. Youtube offers games from even earlier.
It's interesting to see football's growth. Even star players from the 1970s are much slower and smaller than today's. A big lineman in 1975 might reach 275 pounds, while today's hit 340 or more. Running backs have bulked up from around 190 pounds to 230 up to 250, a common weight for tackles and guards 40 years ago.
Also, stadiums risen ever skyward with luxury box seats. Scoreboards in the 1970s didn't look like the Starship Enterprise, equipped with giant screens showing futuristic videos pulsating with sound and light.
With all of the added comfort and entertainment, stadium attendance has dropped, with TV showing every game and too many weak match ups for powerhouse teams. Students especially find the stadium experience less exciting.
Perhaps players will continue growing heavier and stronger, although the rising fear over brain damage and obesity should bring limits. Stadium growth also seems at an end point.
But human development has appeared at its last stage before. Maybe players in 2056 will weigh up to 500 pounds, and stadiums will blot out the sun and seat 500,000 fans.
Or perhaps robots will play the game in TV studios.