Two kinds of individuals are distinguished: abstract and concrete. Whereas abstract individuals belong to our conceptual sphere, concrete individuals (i.e. particulars) individuate the world of matter. A subject investigating the external world projects abstract individuals onto concrete ones. The proposal offers a solution to various metaphysical and epistemological puzzles concerning individuals, e.g., the Ship of Theseus, the Polish Logician, problems with reidentification, or proper names.
Individuals, particulars, Polish logician, reidentification, Ship of Theseus