This chapter argues that in attempting to justify measurement methods, a circularity inherent in empiricist foundationalism is found. Dealing with this circularity means accepting it and admitting that justification in empirical science must be coherentist. Within such coherentism, epistemic iteration provides an effective method of scientific progress, resulting in the enrichment and self-correction of the initially affirmed system.
Keywords: measurement methods, justification, foundationalism, coherentist,