Criteri di identità

This essay of descriptive metaphysics intends to explain why we sometimes have troubles\r\nabout the identity of objects. The basic idea is that, in judging about the identity of objects,\r\nthree different criteria are usually used: continuity in space-time, identity of material parts\r\nand identity of structure. When these three criteria agree each other, we respond positively\r\nor negatively to the question regarding the identity between two objects. However, when one\r\ncriterion does not agree with the other two, no definite answer to the question about the identity\r\nof the objects is available.