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It is somewhat strange that while usability testing has been around for over two decades, it is still shrouded by a number of myths and misconceptions. Over the years usability testing, a very important part of software development, has become much simpler, faster and cheaper - there's really no good reason to NOT do usability testing.

Nondestructive testing relates to the examination of materials for flaws without harming the object being tested. Non-destructive testing provides a cost effective means of testing while protecting the object's usability for its designed purpose. The technique can be applied on a sampling basis for individual investigation or may be used for 100% checking of material in a production quality control system.