Abstract

Philosopherd have long stressed a distinction between theory justification and theory discovery based on a belief that justification and discovery are essentially different processes. What makes these two processes essentially different, it was assumed, is that the process of justification is guided by criteria which are expressable as rules, while the processes involved in discovery are not rule-guided. Moreover and perhaps more importantly, it was assumed that tha rules for justification are discoverable a priori by rationalistic logical analysis but an account of discovery, whatever it turns out to be like, will be describable only a posteriori.