The explication of doxa’s double character as both true and false, causes Theaetetus to adjust his second answer to Socrates’ question: “what is knowledge?”
“To say that knowledge is only view [doxa] is impossible, for a view can often be false. Only true view could be knowledge. Let that be my answer.” (184)
Here Theaetetus tries to steer the discussion away from the concept of false or distorted knowledge, towards knowledge as truth; because false knowledge, as given in the false view, appears to him be an impossible contradiction of terms. Yet experience tells us that it is an everyday occurrence. Heidegger gives an example, we see someone approaching and we think it is someone we know, but we are mistaken, it is not that person. Thus, in our initial sighting, we have a false view.
Socrates, rather than passing over the false view, expresses puzzlement; it appears to be part of everyday experience yet the guiding principle of knowledge, that we either know something or we do not know it, tells us the false view is impossible. This leads him to engage in an extended analysis of the pseudes doxa, in terms of this principle of knowledge looked at from three different perspectives.
Each of these perspectives demonstrate the impossibility of us having a false view, which will lead us in turn to decide which is true, the principles we apply to experience or the experience itself.