Cognitive computing (CC), a buzzword and computing concept by IBM, aims at making a human kinds of problems computable. It addresses complex situations that are characterized by ambiguity and uncertainty. In dynamic, information-rich, and shifting situations, data tends to change frequently, and it is often conflicting. The goals of users evolve as they learn more and redefine their objectives. To respond to the fluid nature of users’ understanding of their problems, the cognitive computing system offers a synthesis not just of information sources but of influences, contexts, and insights. To do this, systems often need to weigh conflicting evidence and suggest an answer that is “best” rather than “right”.