Read: Plato, Theaetetus, Selection of fragments from Heraclitus
This dialogue is very difficult and meanders through multiple issues. Accordingly, the discussion question for this week is mostly targeted at trying to figure out what is going on in one part of the text.
At 151d, Theaetetus defines knowledge to be perception, and Socrates follows up by introducing Protagoras’ theory that man is the measure of all things at 152a. How would you characterize Protagoras’ claim in your own words? Socrates also connects Theaetetus’ definition to a Heraclitean picture of the world at 152d. How would you characterize this corresponding metaphysical view? (try to get each down to a sentence or two – a very hard task, but a useful one to practice.)
Do you think these related views are required to make sense of Theaetetus’ definition? If so, why? If not, why not?