Writing Is Not Thinking — But It Can Extend It
Fact First
Human cognition is not bound to one specific medium. People think while perceiving, imagining, gesturing, conversing, and other ways of acting in the world. Writing is one way—sometimes a powerful one—to support cognition (Luhmann, 1992; Scheuermann, 2016), but it is neither necessary nor sufficient for thinking to occur.
Cognitive psychology shows that cognition extends beyond the brain into bodies, tools, spaces, and other people (Paul, 2021; Siegel, 2025) and that it operates across fast, intuitive processes and slow, deliberate ones (Kahneman, 2011). Writing can support some forms of thinking—but it does not cause it and is not evidence that thinking is happening.
The Myth and Its Sources
“Writing is thinking”. In its strongest form, the claim suggests that thinking only happens once ideas are put into words (causation). In softer forms, it implies that writing is the primary or superior way of thinking—implicitly downgrading non-written cognition. In practice, the myth functions as a simple inference: People are writing → therefore they must be thinking. This inference is intuitive, reassuring—and wrong.
Its persistence may be driven by:
- writer-centric productivity and PKM cultures, where visible output is equated with cognition;
- selective quotation of authoritative figures (e.g., Feynman; Niklas Luhmann), detached from context, for instance:
“Without writing, you cannot think: at least not in a sophisticated, connected way “(Luhmann, 1992, S. 53, translation St.S.)
Questionable Assumptions – Why Writing Is a Particularly Dangerous Proxy
- Category error: A cognitive process (thinking) is conflated with an activity (writing). Writing can support thinking, but it is not identical to it.
- Reductionism: A complex, multimodal phenomenon (cognition) is reduced to a specific activity (writing) / single medium—written language—ignoring embodied, visual, dialogical, and intuitive forms of thinking (Paul, 2021).
- Hasty generalisation: Because writing helps some people in some contexts, it is treated as how everyone thinks—ignoring potential individual, cultural, and neurocognitive differences.
Building Kirschner et al. (2025), writing exhibits exactly the features that make poor proxies so persuasive:
- Visibility & tangibility – The (mere) presence and amount of notes, highlights, documents, and knowledge bases can create a strong illusion of progress and understanding.
- Artefact production – Artefacts invite evaluation (“Look how much I wrote”), even when cognition has not meaningfully changed.
- Effort without sense-making – Typing, formatting, and organizing require effort, but not necessarily lead to conceptual change.
Busy note-taking can hide the absence of thinking—much like busy classrooms can hide the absence of learning (Wright & Wallwork, 1962).
Some Remedies
This text is not an argument against writing. It is an argument against trusting writing as a sole proxy for thinking.
Writing supports thinking better when it functions as note-making, not mere note-taking: that is, when it involves active synthesis in one’s own words, explicit links to prior knowledge, genuine questioning, comparison of alternatives, and iterative revision over time (see for instance Fiorella, 2023 for generative learning activities). This distinction is well established in a classic text by Wright & Wallwork (1962) and underpins contemporary PKM practice: connecting more than collecting.
Crucially, writing supports thinking only when it forces cognitive operations, such as:
- retrieval and reconstruction,
- comparison and differentiation,
- explanation and justification,
- confronting contradictions,
- abstraction and generalisation (e.g., Fiorella, 2023; Kirschner et al., 2025).
Absent these operations, writing may reduce cognitive load or produce tidy artifacts—but it does not “guarantee” thinking (Kirschner et al., 2025).
Some Practical implications:
- Judge writing by what thinking it makes unavoidable, not by volume, neatness, or polish.
- Match tools to thinking modes: exploration ≠ formalization; intuition ≠ reflection.
- Treat writing as a cognitive extension—a scaffold for thought—not a cognitive equivalent (Scheuermann, 2016).
The Bottom Line
Writing is not thinking. But writing can amplify, stabilize, and extend thinking—when used deliberately and at the right moment (Doto, 2024). Writing is one powerful way humans extend their thinking—especially when ideas must survive time, scrutiny, and communication. And crucially: writing activity is not evidence that thinking is happening.
What Do You Think?
Where does your own thinking reliably happen—on the page, in motion, in conversation, in nature, or somewhere in between? And at what point does writing help—or hinder—it? If you removed writing for a week, how would your thinking change?
References
- Doto, B. (2024). A system for writing: How an unconventional approach to note-making can help you capture ideas, think wildly, and write constantly. New Old Traditions.
- Fiorella, L. (2023). Making Sense of Generative Learning. Education Psychology Review 35(50), 1–42. https://doi.org/10.1007/s10648-023-09769-7
- Kahneman, D. (2011). Thinking, fast and slow. Penguin Books.
- Kirschner, P. A., Hendrick, C., & Heal, J. (2025). Instructional illusions. John Catt Educational.
- Luhmann, N. (1992). Kommunikation mit Zettelkästen. Ein Erfahrungsbericht. In A. Kieserling (Hrsg.), Universität als Milieu. Kleine Schriften, 53–61. Bielefeld: Haux.
- Paul, A. M. (2021). The extended mind: The power of thinking outside the brain. Mariner Books.
- Scheuermann, U. (2016). Schreibdenken: Schreiben als Denk- und Lernwerkzeug nutzen und vermitteln: Band 3 (3., durchg. Aufl.). Barbara Budrich. http://www.blickinsbuch.de/item/ddd2f1df2e137993e25c02a556a912ab
- Siegel, S. T. (2025). From (Commonplace) Notebooks to Notetaking Apps: Why Tools for Thought Aren’t Just Digital. Notelab. Developing Ideas Through Evidence-informed Note-Making. https://doi.org/10.58079/13opo
- Wright, E., & Wallwork, J. F. (1962). On your own: A guide to study methods. Longmans.
Nur der Text ist unter der Lizenz Creative Commons Namensnennung 4.0 International nutzbar. Alle anderen Elemente (Abbildungen, importierte Anhänge) sind „Alle Rechte vorbehalten“, sofern nicht anders angegeben.
OpenEdition schlägt Ihnen vor, diesen Beitrag wie folgt zu zitieren:
Dr. Stefan T. Siegel (29. Januar 2026). Writing Is Not Thinking — But It Can Extend It. Note Lab. Abgerufen am 20. Mai 2026 von https://doi.org/10.58079/15lbo
