Before revision: Gaetano Licata (2011) rejected the slingshot argument showing that the concept of identity (=) employed in the Davidson's and , which suffer from the criticism proposed by Wittgenstein: .
After revision: to state that x=y when all properties of x are also properties of y is false because y and x are different signs, while to state that x=x when all properties of x are also properties of x is a nonsenseGaetano Licata (2011) rejected the slingshot argument showing that the concept of identity (=) employed in the Davidson's and , which suffer from the criticism proposed by Wittgenstein: .