If you follow the TV industry at all, you know that the Nielsen ratings for regular series on the broadcast networks are like a fast-flowing river, and the individual shows are just fish trying desperately to swim upstream. Maybe that water hits an occasional bump in the road and splashes up for a couple seconds, but the decline on the whole feels inevitable. How much of it is the networks' "fault" and how much of it is the rise of alternative options? Debatable. Either way, it's real.
To some extent, this grim reality hurts the integrity of historical ratings. TVByTheNumbers has this thing they call the "Gunsmoke Rule" which essentially says that any ratings beyond the previous season are meaningless for comparison purposes. Sometimes I feel like they just wave that around to save themselves the trouble of looking something up, but the general principle is certainly correct; as ratings decline, so too do standards for renewal and cancellation and pull-me-from-the-schedule-right-now, and this is drastic enough that the raw number standards for network decision-making are completely different within a few short years. Just one example: CBS pulled fall 2006 newbie
Smith from the schedule after it got a 2.8 demo in its third episode. Five years later, the occupant of the same timeslot,
Unforgettable, premiered to a 2.9, has averaged about a 2.1 for most of 2012, and will air (at least) a full season.
All this collective declining is meaningful and needs to be reported. At this rate, eventually ratings are going to get low enough to seriously challenge the broadcast model. No denying that here. But we're not there yet, and sometimes I think all the talk about series lows and the collective decline misses the trees for the forest. For now, broadcast TV ratings are still a system that largely operates by the same set of rules. It's just that the standards for "hit" and "flop" shift to match the collective declines. There are other things happening in this system beyond "everything's down."
Since it's basically the same system, that means there should be a way to put those old, much higher ratings on a level playing field with those of today. Enter what I'm calling
the A18-49+.