In this book I discuss the justification of scientific change and argue that it rests on different sorts of invariance. Against this background I con- sider notions of observation, meaning, and regulative standards. My position is in opposition to some widely influential and current views. Revolutionary new ideas concerning the philosophy of science have recently been advanced by Feyerabend, Hanson, Kuhn, Toulmin, and others. There are differences among their views and each in some respect differs from the others. It is, however, not the differences, but rather the similarities that are of...

In this book I discuss the justification of scientific change and argue that it rests on different sorts of invariance. Against this background I con sider notions of observation, meaning, and regulative standards. My position is in opposition to some widely influential and current views. Revolutionary new ideas concerning the philosophy of science have recently been advanced by Feyerabend, Hanson, Kuhn, Toulmin, and others. There are differences among their views and each in some respect differs from the others. It is, however, not the differences, but rather the similarities that are of...