[The title above is a joke based on Bo Cowgill’s latest comment. To get his joke, you will have to read all the comments there, till the final one (at the time of writing).]

Bo challenges me to publicize a Wikipedia link about the concept of information value. So, here is it:

Value of information (VoI) is undoubtedly one of the most useful notions in decision analysis. […]

Standard Definition

Consider a general decision situation having n decisions (d1, d2, d3, &#8230-, dn) and m uncertainties (u1, u2, u3, &#8230-, um). Rationality assumption in standard individual decision-making philosophy states that what is made or known are not forgotten, i.e., decision-maker has perfect recall. This assumption translates into the existence of a linear ordering of these decisions and uncertainties such that-
– di is made prior to making dj if and only if di comes before dj in the ordering
– di is made prior to knowing uj if and only if di comes before uj in the ordering
– di is made after knowing uj if and only if di comes after uj in the ordering

Consider the case where the decision-maker is enabled to know the outcome of some additional uncertainties earlier in his/her decision situation, i.e., some ui are moved to appear earlier in the ordering. In such case, VoC is quantified as the highest price in which the decision-maker is willing to pay for all those moves. […]

Voila.