As Elijah Higgins sat on a witness stand this week, he detailed the similarities between his experience last season as a rookie tight end for the Arizona Cardinals and the four years he had spent playing football at Stanford University. Five or six days a week at each level of play, he was immersed in football activities: lifting weights, practice, film study, physical therapy and playing games. There is travel on charter jets. Free tickets for friends and relatives. Robust coaching staffs setting rules. There are some differences, Higgins allowed. In the National Football League, there are no classes to attend, though at Stanford, he said, academics took a back seat to football, which is why he still has a few classes to take before earning his bachelor’s degree in psychology.