1. These guys can rush: Aaron Lynch set the tone early by sacking Kirk Cousins and forcing a fumble. The defense continued the assault all day long, getting to Cousins time and time again and rendering the Spartans' run game moot.
2. Special teams can make all the difference: George Atkinson III's kickoff return for a score made it 14-3 early and the Irish never looked back. The return came after MSU's first scoring drive and gave Notre Dame plenty of momentum and distance the rest of the way.
3. Turnovers need to be curtailed: Three turnovers are still too many. Tommy Rees, at 19, is still growing as a quarterback and will make mistakes, but senior John Goodman's fumble of a punt return deep in his own territory could have been costly if not for Blanton's pick three plays later. Three is better than five, and the Irish have at least showed they're capable of bouncing back from mistakes by not letting up against MSU on Saturday. But at some point the bleeding has to stop.
4. Don't look now, but the Irish could be in business: The Irish should be favored in every game moving forward except for the final one, at Stanford. For now, they can focus on a Pitt team that looked more vulnerable Saturday than the Irish themselves through the first two weeks, as the Panthers blew a 21-point lead to Iowa in a 31-27 loss. Purdue and Air Force follow for Notre Dame before its bye, after which it will host rival USC in its first home night game in 21 years.