Einstein observed, "Not everything that can be counted counts and not everything that counts can be counted". There is much wisdom in this penetrating observation. Since this session is devoted to the abstruse science of measurement, may I amplify this Einsteinian gem by adding that not everything after counting counts because those who ought to count cannot always be counted upon to properly count. We evaluate indices in terms of validity. That is to say, are they measuring what they purport to be doing? Reliability, do they produce consistent measures for repeated efforts? And bias, are the values objectively true?