By Bill Graham
Fixing bugs is expensive. Fixing bugs is more expensive the later you leave them, in fact, its been shown to cost a magnitude higher with each major phase of development. The famous defect cost chart from Capers Jones shows the cost of a bug going from $25 at the coding phase to $16,000 in development. Not only that, but most of the bugs are introduced into the system at this stage yet very little of them are found. Logic says we should fix them earlier to save money.
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