Abstract

Gerd Juttemann has recently published a programmatic article in the German journal Erwagen-Wissen-Ethik (Deliberation-Knowledge-Ethics) in which he explains the main tenets of his theoretical approach Historical psychology. We analyze the characteristics of the metalanguage used by the author to produce the integration, questioning its effectiveness given its level of abstraction. Although integrative theories are necessary, a pluralism of grammars seems more promising than approaches favoring one unitary language.