Identity of indiscernibles

The identity of indiscernibles is a principle in philosophy and logic stating that if two objects are exactly alike in all their properties, then they are, in fact, the same object. In other words, no two distinct things can share all the same characteristics; if they do, they must be identical. This concept helps distinguish objects by their unique qualities and underscores that differences in properties are necessary to identify separate entities. It’s a way of saying that complete similarity implies sameness.