In 1979, Feyerabend also published, in German, Erkenntnis für freie Menschen (Knowledge for Free People), which contains roughly two-thirds of the material from Science in a Society while expanding on some sections and diminishing others.

The first section, entitled "Reason and Practice", develops Feyerabend's theory of rationality as something embedded in, rather than separate from, traditions.

[5] Idealism is wrong, Feyerabend argues, because the authority of reason depends on its ability to be integrated into a coherent practice.

[6] To allow for collective decision making when traditions conflict, Feyerabend argues for two kinds of dialogues: "guided" and "open" exchanges.

Feyerabend argues against the view that there should be 'experts' who dictate policy decisions and that experts should be supervised by democratically representative laypeople.