I agree that I might be splitting hairs. But I'm in research, and I guess it makes me sensitive to incorrect statistical language. When I think of the accuracy of a 'test', I am thinking about the degree to which I can trust any result the test gives. Doctorow was talking about the accuracy of one result that the test gives, and then painting the value of the test in that light. It's worth considering, but it should be remembered that all those correct negative results are potentially valuable too.