There are, of course, in addition to conventionalism many other “isms” in the philosophy of science, some of which should at least be mentioned. The most common of these is opportunism, as illustrated by the following well-known story:martha: What are you doing out by the streetlight,George?george: I’m looking for my car keys.martha: But you dropped them on the grass near thebushes.george: I know, but the light is better out here.