Dr. Anne Smith critiques the Analysis Paper by Dr. Bickel and Lane, overlaying their work with a consideration of potential unintended consequences from geoengineering, and extending it by calculating the value of information from the research and development. She also takes a more critical look at the theoretical assumptions underpinning the standard formula for value of information, and finds that they may be inappropriate in a public policy making process. She suggests an alternative value of information formula to match this issue’s role as part of societal decision-making by groups who hold very different sets of probability assumptions.