Not an Excuse, but Remember this when Testing


“…However, experience has shown that no amount of purely functional testing can assure that there are no defects in the system.  In functional testing we see only the result of implementation against the limited test criteria we can establish, and in system complexity there are nearly infinite number of possible input sets, system conditions, environmental conditions, and so on.  We cannot possibly test them all” (Dean Leffingwell, Don Widrig, Managing Software Requirements: A Use Case Approach, 317; Emphasis the authors).


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