Abstract

In the preceding article, [3], Peter Machamer states three objections to my recent attempt to define ‘observation term’. While I believe that all Machamer's objections are mistaken, as I will try to show, his discussion does touch on two problems which have forced revisions. Both his first and second objections are that my definition is too restrictive because its second necessary condition for a term ‘O‘ being an observation term rules out too many terms which are obviously observation terms. The condition is :For any term, 'P' if 'There is an O ' entails the statement, 'There is a P-thing', then ‘Under certain conditions, some P-thing would appear as P to any standard observer’ is true.