 This defensive strategy, however, is potentially open to the more serious charge of solipsism. This risk is clearly present in the aforementioned thesis that it is “impossible to contradict” (80A19 DK). The thesis in question is fully compatible with MM. If each individual is the measure of his or her own world of sensations and judgements, contradiction can only be apparent: each individual entertains a relationship with things whose truth-reality cannot be contradicted or disputed by others. But how can we deal with these divergences and oppositions if everyone is right? If this is how things stand, what follows is a radical (and intolerable) form or solipsism, whereby the fact that each person is his or her own judge makes it impossible to discuss things with others (and, in addition, makes also Protagoras’ teaching useless). The price that Protagoras must pay in order to defend the consistency of his doctrines seems far too high (Woodruff 1999: 303).