Meaning of "U"
If U = 1 Then the "Naive" (NF1) Method is as good as the current Forecast Method
If U < 1 Then the Forecasting Method is better than the NF1 Method
If U > 1 Then the NF1 Method is better than the Forecasting Method. There is no need to waste time applying further Forecasting methods.
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“By day, Structuralists constructed the structure of meaning and pondered the meaning of structure. By night, Deconstructivists pulled the cortical edifice down. And the next day the Structuralists started in again.”
—Tom Wolfe (b. 1931)