 is interindex consist a hobgoblin? it assum amount interindex consist experienc method index indic qualiti index to explor assumpt hypothes state concern connect interindex consist index qualiti a specif counter-exampl exhibit hypothes invalid although mathemat analysi counterexampl yield insight gener relationship interindex consist success retriev subtl expect it conclud equat describ relationship deriv measur inter-index consist mean clue index qualiti 