 The foregoing entry represents a detailed case-study of metaphysical views which are heavily guided by syntactical, lexical, and semantic considerations, but freed from some of the methodological constraints and more narrow objectives of linguists and semanticists. Often in the preceding we have seen how the +MASS/+COUNT distinction was used to motivate a parallel ‘metaphysically serious’ stuff/thing distinction. The question to be briefly addressed here, after looking back on sixty years of work on the topic, is: to what extent is the +MASS/+COUNT distinction up to the tasks assigned to it by metaphysicians?