In 1969 when Joe Namath and the New York Jets upset the heavily favored Baltimore Colts in Super Bowl III, you could only bet on the basics: point spread, total, and the money line. And legally, you could only bet the game in Nevada.
Now 50 years later, with proposition betting, imagine going back in time.
For example, betting the over and under catches by Don Maynard (0, zero) or the yards rushing by Matt Snell (121 yards). It would have added to your enjoyment of the game.