Just as in everyday life, change is an inevitable facet within football at the collegiate level.
Student-athletes graduate, transfer or walk away from the game following the conclusion of each season, resulting in a process of gradual transformation that the Notre Dame offense must undertake during the current offseason.
Fortunately for the Irish, head coach Brian Kelly made the decision to return for his fourth season as head coach despite overtures from the NFL's Philadelphia Eagles.
It's Kelly's job to gel and mold an offense that fits the available talent on the roster for the 2013 season.
In what ways will it be different than the 2012 version?
The answers lie ahead.