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CPB,
Yes, my patience number is a quick-and-dirty. But OPS is every bit as much a quick and dirty, yet it has quickly become the most widely accepted "advanced" stat in wide usage -- (i.e. -- casual fans who aren't actually statheads "get" what it does).
And the limitations aside - my patience number is VERY stable -- so even if BA jumps up or down 50 points, the patience number rarely has major fluctuations.