Judgments are psychical phenomena and they belong therefore not to World 3 but to our real world. Each judgment is an act or event that takes place at a certain time in a certain mind and is herewith part of a causal network. As a part of our real world, each judgment comes into being in time (and will pass away later on). From an epistemological point of view it is of particular relevance whether a judgment is caused or mediated by other judgments or whether this is not the case, i.e., whether