Abstract

I examine the role that approximate truth plays in arguments for convergent realism and diagnose some difficulties that face attempts to defend realism by employing this slippery concept. Approximate truth plays two important roles in convergent realism : it functions as a truth surrogate and it helps explain the success of science. I argue that approximate truth cannot perform both of these roles. If it adequately fulfills its role as a truth surrogate, then it cannot explain the success of science. If it adequately explains the success of science, then it cannot function as a truth surrogate