Heard something similar to this but from crew planning, perhaps someone even more in the know than a scheduler.... However he did say that the models don't actually look at a year ago, but rather only a month or two of history. He also said that the ability to drop an R day has nothing to do with the # of trips already available for the day...I know makes no sense. Looking back only a month doesn't make much sense either, as December would be much busier than November, and November more than October and so on...but hey, what around here makes sense??