**Pesticide Paradox**

The phenomenon that the more you test software, the more immune it becomes to your tests - just as insects eventually build up resistance and the pesticide no longer works.  [Beizer] 


from: [http://www.allthingsquality.com/p/testing-terms-glossary.html][1]


  [1]: http://www.allthingsquality.com/p/testing-terms-glossary.html