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Re: Testability and normative requirements

From: Karl Dubost <karl@w3.org>
Date: Wed, 21 Dec 2005 09:44:42 +0900
Message-Id: <197644EB-3B67-4A9F-93D5-225101294B25@w3.org>
To: www-qa@w3.org


Le 05-12-21 à 02:22, Dominique Hazael-Massieux a écrit :
> Is there a logical contradiction behind the idea of a normative
> requirement that would not be testable? I don't think there is, but
> would be interested to hear what others think about it.

Could you give a practical example of what you would consider as a  
non-testable normative requirement?

Often when I had to deal with this it's because we don't test the  
right thing. My favourite example for that is coming from nuclear  
physics. You can't test the position of a particle, but you can test  
the probability of its position. The first one is non-testable by  
virtue of the physics law (normative requirement) but it doesn't mean  
you can't achieve a test which verifies the law. There's a  
probability that  this particle is here or not. Does the test verify  
this probability?


-- 
Karl Dubost - http://www.w3.org/People/karl/
W3C Conformance Manager, QA Activity Lead
*** Be Strict To Be Cool ***
Received on Wednesday, 21 December 2005 00:44:45 GMT

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