The ROI on ROI Computations
"While ROI analysis is a must-do for any self-respecting management team, ROI is often misused and little understood.
Over the years, after countless ROI analyses for leading software providers, my opinions have fundamentally shifted about the use of ROI analysis and how meaningful ROI results can be. In short, my take on ROI has shifted away from the belief that the results of ROI are factual and the goal of the ROI exercise is to find the answer...the real teaching of ROI is not in solving the equation, but in learning through the process. ROI is a journey not a destination."
Read more in this excellent article from Darwin Online.