RB 65

that ideally should describe (physical) reality. Consequently, scientific argumentation can only be founded upon arguments whose truth value or validity is verifiable in a manner that does not defy the prevailing methods of scientific verification. In Hägerström’s terminology,this means that the facts and concepts underlying a scientific conclusion either, or both, must exist and be non-contradictory. a ca l l f o r s c i e n t i f i c p u r i t y 169