indiscernibility of identicals

listen to the pronunciation of indiscernibility of identicals
Английский Язык - Английский Язык
The principle that if two objects are absolutely identical then they must be indistinguishable from one another with respect to all of their properties

For example, Levinson claims that a Stamitz symphony containing a Manheim rocket—a novel device in Stamitz's day—is an exciting musical work, but a work written today with the same sound structure would be funny rather than exciting. Since the Stamitz symphony and the (hypothetical) contemporary sound-identical work differ in properties, it follows from the indiscernibility of identicals that they are distinct musical works.

indiscernibility of identicals
Избранное