Hans-Joachim Niemann

He then became an assistant lecturer at the University of Bamberg (1993-1999), where he taught Vienna Circle, Critical Rationalism (Karl Popper, Hans Albert) and Popper's critics (Thomas Kuhn, Paul Feyerabend, Imre Lakatos), as well as the ethics of Bertrand Russell, John Leslie Mackie and Hans Jonas.

[9] Popper biographer Friedel Weinert[10] sees Niemann, along with David Miller, Jeremy Shearmur, and Hans Albert, among the few who currently continue Critical Rationalism.

Niemann proved, based on archival material and many essays scattered throughout Popper's writings, that he, contrary to his reputation,[14] was an important ethical theorist who advocated three major ethical concepts: (1) Negative Utilitarianism, i.e., avoiding concrete suffering instead of striving for indefinable happiness.

And (3) problem-oriented ethics, i.e., treating values, moral laws, and principles of action as objective attempts to solve problems.

[19] Niemann's work was well received, even by biologists,[20] especially the above-mentioned 2014 published book in which Popper's long kept closed First Medawar Lecture 1986 is reprinted.

Popper had delivered the lecture titled A New Interpretation of Darwinism to the Royal Society in the presence of four Nobel laureates.

[21] It had caused a great stir at that time, partly because one of the Nobel laureates, Max Perutz, got into an argument with Popper after the lecture about whether or not biochemical and biological processes could be explained in purely chemical-physical terms.

In 2012, Niemann was able to get Popper's former assistant and heir to his copyrights, Melitta Mew, to allow him to publish it ahead of time: in 2013 appeared the German translation;[23] in 2014 the original English version.

[24] For an account of the long road from Popper's 1986 Medawar Lecture to its publication, see Niemann (2014), pp. 58–62.

"[27] Noble agrees with Niemann's view that Popper found a third way of evolutionary theory and quotes him in the motto of his article: "The story of how humans and all living things came into existence is told in two widely believed versions: the Book of Genesis and Darwin's Origin of Species.

Niemann showed that with this kind of theory of knowledge (in German 'Wissenstheorie') Popper has founded a new philosophical discipline.

[36] Above all, however, Popper's new theory of knowledge is concerned with (3) whether linguistic world-3-knowledge preserved in books and other media has a reality of its own and obeys laws of its own, and whether it can act on man and on new ideas that come to his mind, thus enabling his transcendence.

His topics are mainly ethics, critical rationalism, philosophy of science, biophilosophy, Karl Popper, and Hans Albert.

Published by Mohr Siebeck (Tübingen), Niemann translated and edited six books of Karl Popper: See the corresponding German Wikipedia page.