With the second clause in my sentence making the tautology, I was mentally referencing this: http://en.wikipedia.org/wiki/I_know_it_when_I_see_it http://en.wiki

With the second clause in my sentence making the tautology, I was mentally referencing this: http://en.wikipedia.org/wiki/I_know_it_when_I_see_it http://en.wikipedia.org/wiki/I_know_it_when_I_see_it I'm saying that the criteria is so vague as to be effectively undefinable.