Why pay for a test? Only if it changes your final decision.
In short: In the face of uncertainty, information is only as valuable as the better choices it enables. This video from MIT's Risk and Decision Analysis course explains how to calculate the expected value of a test.
The value of any test is defined by its expected value, which represents the potential benefit of acquiring new information. In the context of decision-making under uncertainty, a test is only useful if it provides enough clarity to change the decision-maker's course of action for the better.
This concept, taught by Richard de Neufville in the Fall 2021 course IDS.333, emphasizes that information is not inherently valuable; its worth is strictly tied to the improvement it facilitates in the decision-making process.
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Sources
- Summary by Intellect · source: Unit 9: Value of Information, Video 2: Value of Test
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