Don't Discard A Bad Forecast; It's Cheaper To Apply OLC
When forecast error is significant, the authors argue that instead of discarding it, use a technique called Theil's Optimum Linear Correction procedure (OLC).
From Issue:
Winter 1983
(Winter 1983-1984)
IBF Journal Article by Charles H. Brandon and Jeffrey E. Jarrett, originally published in Winter 1983-1984

Don't Discard A Bad Forecast; It's Cheaper To Apply OLC