173Chapter eight: Fundamentals of earned value
Which is more accurate? Who knows? But we are denitely behind
schedule … unless, again, the scheduled work that we have not com-
pleted is all off the critical path with lots of oat.
Therefore earned schedule tracking solves the minor problems with
earned value schedule tracking but not the major ones:
1. That earned value tracking is a cost-based metric
2. That cost and schedule are only tangentially related
3. That earned value does not recognize the most crucial (critical?)
aspect of the project schedule, that is, the critical path
4. That earned value tracking processes continue to allow taking credit
for schedule purposes of work performed ahead of schedule and
even out-of-sequence
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