Groundwork of a Sartrean input toward informing some concerns of critical systems thinking

Research under way by this author seeks to return to von Bertalanffy's phil osophical deliberations believing that they can provide an input which is a s yet untapped and which provides a journey through phenomenological and ex istential ideas. The motivation for the research stems from three interlink ed areas. First, in examining the beginnings of Critical Systems Thinking, a justification is found for its embrace of diverse inputs which began with Critical Theory and Habermas. A main conclusion is that any diversity must have one thing in common: it must not violate systemicity. This leads to a n examination of the initial Habermasian incorporation, where one finds tha t a question which directly leads Critical Systems Thinking to consider cri tical awareness, social awareness, and human emancipation remains unanswere d. An answer is provided, but this answer comes from an as yet untapped sou rce in the field, the work of Jean-Paul Sartre. The appearance of Sartre in providing what is deemed to be an important answer begs the further questi on of whether he can inform Critical Systems Thinking without violating sys temicity. A return to von Bertalanffy, in the third section, shows that no such violation is pending since a reading of his philosophical deliberation s paves the way for an input from Sartre, first through the phenomenologica l tradition and then through its existential variant. In the process, the s ystemic nature of both Sartre's approach and ethical concerns unfolds.