For several years now Quine has been proclaiming a solution to problems concerning observation sentences and evidence: “The dislodging of epistemology from its old status of first philosophy has loosed a wave … of epistemological nihilism. This mood is reflected somewhat in the recent tendency of Polanyi, Kuhn, and the late Russell Hanson to belittle the role of evidence and to accentuate cultural relativism …. It is ironical that philosophers, finding “the old epistemology untenable as a whole, should react by repudiating a part which has only now [with Quine's account of observation sentences] moved into clear focus.” (pp. 87-88). Attacks on the notion of observationality by the critics of positivism have been : viewed by many (for example Scheffler, Chapter 1) as seriously undermining the objectivity of science. Quine's claim to have solved the problems, therefore, deserves careful consideration and evaluation.