By G.S. Rosenkrantz
Many modern philosophers have an interest within the scotistic idea of haecceity or `thisness' since it is proper to big difficulties bearing on identification and individuation, reference, modality, and propositional attitudes. Haecceity is the single book-length paintings dedicated to this subject. the writer develops a unique safeguard of Platonism, arguing, first, that abstracta - nonqualitative haecceities - are had to clarify concreta's being various at a time; and moment, that unexemplified haecceities are then required to house the entire variety of circumstances within which there are attainable worlds containing members now not found in the particular global. within the cognitive zone, an unique epistemic argument is gifted which signifies that definite haecceities could be grasped through anyone: his personal, these of definite of his psychological states, and people of assorted abstracta, yet no longer these of exterior issues. it's argued that consequently there's a transparent feel within which one is without delay accustomed to the previous entities, yet no longer with exterior issues.