Phronesis 63 (2018) 359-391 brill.com/phro Thrasymachus’ Unerring Skill and the Arguments of Republic 1 Tamer Nawar Faculty of Philosophy, University of Groningen, Oude Boteringestraat 52, 9712 GL Groningen. The Netherlands
[email protected] Abstract In defending the view that justice is the advantage of the stronger, Thrasymachus puz- zlingly claims that rulers never err and that any practitioner of a skill or expertise (τέχνη) is infallible. In what follows, Socrates offers a number of arguments directed against Thrasymachus’ views concerning the nature of skill, ruling, and justice. However, both Thrasymachus’ views and Socrates’ arguments against Thrasymachus’ views have frequently been misunderstood. In this paper, I clarify Thrasymachus’ views concerning the nature of skill and ability, reconstruct Socrates’ arguments against Thrasymachus’ views concerning skill and justice, and argue that Socrates’ arguments are better than often supposed. Keywords Plato – Thrasymachus – Republic – technē – skill – ability – justice … The doctor never hesitates to claim divine omniscience, nor to clamour for laws to punish any scepticism on the part of laymen … On the other hand, when the doctor is in the dock, or is the defendant in an action for malpractice, he has to struggle against the inevitable result of his former pretences to infinite knowledge and unerring skill. George Bernard Shaw The Doctor’s Dilemma ⸪ © koninklijke brill nv, leiden, 2018 | doi:10.1163/15685284-12341354 360 Nawar 1 Introduction In Republic book 1, Thrasymachus claims that justice is the advantage of the stronger. After being shown by Socrates that several of his views are incon- sistent, Thrasymachus evades Socrates’ reductio by claiming that no ruler and no practitioner of a skill (τέχνη) ever errs (Rep.