In a recent paper1 I argued that observation can be thought of as the result of a properly composed and functioning observation system. In brief, such a system must be composed of a source object and one or more devices which interact with a receptor. If we think of observation as the result of interaction among components are differing functions, we can approach the problem of describing human sense perception as that of describing one type of observation, differentiated from other (...) types by the organic and species specific nature of the receptor devices. Receptor devices are typed by their specific range of sensitivity, which is best thought of as a limit on the type of devices with which the receiver can interact. One consequence of this view is that observation can be achieved in all sorts of ways by all sorts of organic and non-organic systems as long as they satisfy functional conditions. (shrink)

This article seeks rapprochement between the sociology of knowledge and philosophy of science by attempting to capture the best social constructionist insights within a strongly realistic philosophy of science. Key to doing so are separating the grounds for the individual scientist coming to know that P from those grounds for socially credentialing the claim that P within the relevant scientific subcommunity and showing how truth considerations can enter into the analysis of knowledge without interfering with social constructionist treatments of credentialing (...) claims. A detailed epistemology and associated account of the social credentialing of knowledge claims are presented. Close attention is paid to the epistemological and social aspects of the nature and role of observation reports, the interpretation of data, simplifications, idealizations, and approximations, and the nature of replication. The article contains a National Aeronautics and Space Administration remote-sensing case study and a detailed analysis of replication in the 1881–1933 Michelson-Morley-Miller interferometer ether studies. (shrink)