Following Mary Douglas, he points out:
A hair on my head is just a hair, but if it falls off and lands on the floor, it’s dirt. What makes it dirt is, necessarily, its involvement in a set of human relations.Therefore, he suggests that:
...to find out if an analytic theory of truth is of any use, ask yourself what the theory makes of a claim like "The hair on the floor is dirt."(See his entry on the Douglas Test for a more complete explanation; the author of Missives from Marx is an Assistant Professor in Religious Studies at a college in the United States.)
