## Definition > A quantitatively expressed reduction of uncertainty based on one or more observations.  [^fn1] [^fn1]: [[How to Measure Anything]] ## Usage in business > This "uncertainty reduction" point of view is what is critical to business. Major decisions made under a state of uncertainty such as whether to approve large information technology (IT) projects or new product development can be made better, even if just slightly, by reducing uncertainty. Such an uncertainty reduction can be worth millions.  [^fn1]