 Assembling objects to a more complex object is an important activity of the mind, but it does not form a separate species of experience beyond the four aforementioned types of mental acts. According to Meinong (1902, §2; 1910, §2) two or more representations of objecta can be used to produce a new representation of a complex objectum. The objects of the more simple representations can be seen as the foundation of the complex object, which is always an object of higher order, a superius, because it is founded by the founding objects (inferiora). (See below Section 5.5.) The diversity of red and green has red and green, the checkered pattern has squares of different colors, and a red square has red and square as its inferiora. In order to get a representation of objects of higher order, of a Gestalt, a melody, for example, you have to have representations of the more elementary objects on which you build the complex representation. This operation of the mind is called “production of representations” [“Vorstellungsproduktion”] because the mind is able to produce complex representations and not already their corresponding complex objects. This conception became an important and fruitful, although controversial, notion in Gestalt psychology, as Meinong still acknowledges the primacy of the elementary representations. The underlying elements of objects of higher order, for example, are not to be seen as “only abstractly distinguishable parts” which was assumed by the Berlin Gestalt school. (Cf. Smith 1994, Chapt. 8: 272.)