sentences:  In this way, by saying that the quasi-cardinal of the power quasi-set of "x" is 2qc("x") (suppose that "qc"("x") = 6 to follow the example), we are not excluding the hypothesis that there can exist six subquasi-sets of "x" which are 'singletons', although we cannot distinguish among them.Whether there are or not six elements in "x" is something which cannot be ascribed by the theory (although the notion is compatible with the theory).If the theory could answer this question, the elements of "x" would be individualized and hence counted, contradicting the basic assumption that they cannot be distinguished.