Organizations need to pick winners and losers.  For example, a government must decide to whether to fund project X, Y or Z; a corporation only has the capital to build asset A, B or C. 

Most organizations have developed a portfolio selection and management methodology.  There are typically 2 parts to such a process: a set of criterion and a scoring scheme to rank the criteria.  In this blog, I want to focus on the second challenge, the scoring.