Abstract

Keith Lehrer describes in his Theory of Knowledge a Justification Game which is played by a Claimant who tries to establish his justification for some contingent claim and a rather harmless Skeptic who tries to stop the Claimant. The doubts of a serious philosophical skeptic are - in opposition to Lehrer - analyzed as doubts concerning the justification of our beliefs and not their contents. Making the reglementations for a solid philosophical argumentation more precise the setting of a Serious Justification Game is defined and thus replaying the game it tums out that the philosophical skeptic succeeds in providing a profound philosophical argumentation for his denial of Lehrer's positive claim for justification.