Rookie CEOs and control freaks will ask for the charade of a hard ROI model, something that really is almost impossible to create with any degree of accuracy. And if these ROI models are so important, why are they never revisited after the technology is implemented? I’ll tell you why. These models were BS in the first place and so much is learned in the implementation that the upfront ROI models are almost always irrelevant. Also, when CEOs want to invest in something on a hunch, they don’t do much of an ROI model. They just call it strategic.
via Explaining Hadoop to Your CEO – Forbes.