How do we select the best possible alternative, when there are still a large number of unknowns?

Approaching decisions armed with adequate information is, of course, the ideal, but it's not always possible given the time constraints of a project. Nor do we always have the leisure to address each critical issue that factors in a decision. So we rely on time-tested tools such as decision analysis to help us make the best possible decision, given the information at hand. Decision analysis and decision trees are most often helpful when they're closely tied to hard financial measurements, but they can also help us make good choices when some of the factors are unknown.…

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