I looked at Wiki as a place to start to establish working definitions..not as simple as one may first think... the thread you suggested Craig would be useful.
Your appreciation of the issues etc no doubt would give members better understanding. As I have said many times you have a happy knack of explaining things that help my understanding and no doubt others must feel the same as me... mmm not necessarily with only one sample
...anyways without conducting a survey on what others think I am confident others may think similar to me
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alex