y,
in databases, ethology, and qualitative research.

JA:  In the 1st category we find the relations of O to O, S to S, I to I.
     In the 2nd category we find the relations of O to S, O to I, S to I.
     In the 3rd category we find the relations of O, S, I, in 3-foldness.
 
JM:  These would be the degenerate categories of thirdness.
     I believe that it is better to build the categories so
     that they are hierachized but still be independent of
     each other.  How do you express the fact that genu