The only takeaway that matters from Sunday night's game is the Detroit Lions' 0-3 start.
Suffice it to say, it doesn't bode well for future success—not with a trip to Seattle and a visit from the NFC's most impressive team, the Arizona Cardinals, following quickly on its heels.
There is now a legitimate chance that this team won't win until Week 6 at the earliest.
But it's not a certainty. So let's take a look back at the biggest lessons learned from Detroit's Week 3 loss and see what challenges are looming.