The prudence concept does not quite go so far as to force you to record the absolute least favorable position (perhaps that would be entitled the pessimism concept!). Instead, what you are striving for is to record transactions that reflect a realistic assessment of the probability of occurrence. Thus, if you were to create a continuum with optimism on one end and pessimism on the other, the prudence concept would place you somewhat further in the direction of the pessimistic side of the continuum.