 The role for human judgment or decision in mediating the classification of particulars leaves open that their correct classification as to type might vary depending on specific features of the occasion for so classifying them  (see (4) above).  It may be, for example, that for certain purposes an historic state of affairs involving a rose is sufficiently like standard situations involving red things as to warrant sameness of classification, while for different purposes its likeness is outweighed by its dissimilarities from the standard cases. Moreover, what are counted as standard cases may vary with the purposes operative in attempting to classify, and may shift as new cases come to be counted as of a specific  type.[13]