  Watkins also provoked doubts about the methodological status of the principle by distinguishing between “unfinished or half-way explanations” of social phenomena, which might not specify an action-theoretic or individualistic mechanism, and so-called “rock-bottom explanations,” which would (1957, 106). Yet in so doing, he grants that these half-way explanations (the example he gives is the relationship between inflation and the unemployment rate), while they may not tell us everything we would like to know, need not be meaningless or false. This creates problems, as Lars Udehn points out, since the mere fact that one can explain social phenomena in terms of individuals “does not imply the methodological rule that they should be explained this way” (2001, 216) – especially not if the “half-way” knowledge obtained is sufficient for our (extra-scientific) purposes.