A college football coach’s main job is to put his team in the best position to win. He can accomplish this by recruiting well, instilling a great culture in the program, and preparing his team to play during the week. On gameday, a good coach will optimize his team’s chance to win when making tough strategical decisions. A common decision all coaches face is whether to kick or go for it on 4th down.
Lots of variables might go into a 4th-down decision: field position, score, time remaining, health and stamina of your team, weather, etc. The bottom line is that a coach should be making the decision that is going to give his team the best chance to win the game.