75). The weakness is that it is possible for “enumerations of parts without knowledge” (Jowett 276). Nonetheless, this weakness in Theaetetus’s case is not that bad comparing to other two cases (Meno and Republic) in terms of different degrees of weakness in the development of knowledge theory.Plato’s late view in Theaetus is superior to all of his early views in Meno and Republic. In Meno, Plato’s view falls short on his argument of recollection because this visible world has nothing to do with the invisible world. If there were another world beside our world, it would have nothing to do with our knowledge. In a sense, if we need measure how much knowledge we, we can hardly tell our knowledge at certain degree when situations may arise to us case by case because every case is not the same. For almost the same thing in Meno’s case, in Republic, Plato’s view is insufficient; our senses cannot give us knowledge when we hear people speaking different languages that we have never learned and when we see magicians performing illusions. In these cases, we do not understand what people are talking about in foreign languages and the illusions deceive our eyes; as a result, our senses and perceptions do not give us knowledge. On the other hand, Plato’s view in Theaetetus is stronger as we see in our world today. A true opinion can be understood as a hypotheses; a rational explanation is the experiment of the hypothesis. When a hypothesis matches with a rational explanation, a large possibility that it can become theory. When we know the theory and we can explain it, then we have knowledge. This argument in Theaetetus has less weakness than other arguments in his earlier views (Meno and Republic). Likewise, we can be sure how much we know at least in a certain degree. For instance, if we take a math test, we can measure how many principles, theories, and formulas we have learned. For ...
