Brian Earl lurks, not in a menacing way, but you always know where he is in a room. The new coach of the Cornell men’s basketball team — hired after eight years as an assistant at his alma mater of Princeton — is a relatively quiet presence at practice. Sometimes Earl jumps into drills, but often he’s slightly removed from the middle of the action, observing. He watches practices intensely, walking over to players one-on-one to tell them if he sees something they can improve. From time to time, Earl will raise his voice, but that’s often limited to when he’s announcing what drill he wants to see the team work on next.