Scientific Progress was my first book. It was my doctoral thesis at Uppsala University in 1981.
In it I suggest an alternative way of viewing science − alternative to the logico-linguistic way − based on the simplicity way of thinking. And after that I present the perspectivist conception of science, derived directly from simplicity. I did this against the background of the Kuhn-Feyerabend controversy of the 1960s concerning the incommensurability of certain scientific theories. It seems I correctly took incommensurability to suggest a problem with the logico-analytic approach to science, i.e. with the logical empiricist and Popperian views.