Do you seriously believe that NFL players just show up and don’t to learn, develop, improve, get smarter, study film, improve technique, drill to improve their skill sets, work on strength and conditioning? Do you really believe that players who are literally given assignments on every single play function equally regardless of what that assignment is? Do you really believe that the design of that play and the timing and situation use of it has no impact on player performance? Virtually every single thing a player does in practice and a game is dictated by coaches.