This theory suffers from the problem that it is not clear what the presentation exactly is. Is the presentation something only in the mind, or is it also in the world as object? Twardowski says that sometimes presentation is used for the object in the world and sometimes for the immanent content of a mental phenomenon.Twardowski, Kazimierz, Zur Lehre vom Inhalt und Gegenstand der Vorstellungen – Eine psychologische Untersuchung, Vienna: Philosophia Verlag, 1982 [1894], p. 4.
