Proper social interactions require knowing the values placed in things by others. This includes the significance of the loss of those things, but manipulation of the possible outcomes of a situation is often without an understanding of the reasons for the relative size of the value of each thing.
For an individual or entity to hold the same values for things, is it necessary to understand the reasons for those values? For humans specifically, does lacking the reason make the value harder to remember? In which cases should it decrease confidence in the result?