text: no no i agree i think i believe in test for cause if if somebody 's performance and i guess that there 's the other argument is that well do you wait until they screw up you know and someone gets hurt
  
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  I think you can test but you need to have a reason other than ' just to make sure ' , but then again I worry if you don 't test you won 't catch someone who 's going to do something tragic .