Heidegger: being, a shared world and its limits · Lesson 1 of 12

What are we asking when we ask about being?

What you should be able to do

  • Distinguish questions about a particular being from questions about its being, without treating every account of use or meaning as ontology.
  • Explain why inquiry can begin from an understanding that is real but incomplete.
  • Reconstruct Heidegger’s reasons for starting with Dasein and being-in-the-world.
  • Give a serious objection to the priority Heidegger claims for this inquiry, and explain what the objection leaves open.

A cup on the table

Suppose a friend has lent you a cup. You drink from it, remember to wash it and set it beside the door so that you will take it back. Later a visitor asks whether its glaze contains lead. Nothing about the cup’s composition has changed, yet drinking from it, keeping a promise and investigating a possible hazard each bring different features and relations into view.

Heidegger wants philosophy to notice the understanding already at work in encounters like these. Before you describe the cup’s dimensions, you know how it belongs in what you are doing; even an unfamiliar object shows up as something you might examine, ask about or leave alone. What makes these different ways of encountering something possible?

You manage all this without a theory of what makes it possible, and the gap between understanding an encounter and explaining that understanding gives Heidegger his opening.

How can we ask what we partly understand?

At first the question seems to defeat itself. To ask about being at all, we must already understand something of it; otherwise we would not know what our question concerned, or recognize an answer if one came. But if we already understand it, what is left to discover?

Heidegger’s answer begins by distinguishing an understanding we have from our ability to give an adequate account of it. In ordinary life we use “is,” distinguish what happened from what we imagined and encounter things as available, absent or doubtful. None of this requires a worked-out theory of being, but it does show that the inquiry starts from something more than complete ignorance.[1]

Beginning this way need not be a vicious circle. If someone can follow a rhythm without being able to explain its structure, an inquiry into that structure has somewhere to start, although their familiarity does not guarantee that their first explanation will be right. In the same way, our everyday understanding of being gives Heidegger something to investigate without proving the account he eventually gives of it.

Heidegger also thinks that inherited theories can distort what seems obvious. If we have already pictured all of reality as objects with properties, we may assume that understanding another person consists in detecting hidden events inside a body. An inquiry can start from everyday understanding and still question the theories mixed into it. Familiarity gives access, not immunity from criticism.

Beings and being

A cup is a being: something that is. So is a tree, and so is another person. A question about a being might concern its composition, its history or its relations to other beings. Did the cup come from a particular kiln? Is it still in your kitchen? Does it belong to your friend? Such questions can be difficult and important, and Heidegger calls the investigation of beings ontic.[2]

Being is what we are trying to understand when we ask what it means for such things to be. The question concerns the ways in which beings are, not some further being alongside them, and Heidegger calls inquiry into being ontological. The distinction does not divide small ordinary things from one enormous or sacred thing. A supreme creator, if there were one, would still be a being, about which a further question could be asked; making something exceptionally powerful does not explain what being means.

A description of the cup’s properties may answer the question you have about the cup. But would an inventory of properties also explain what it is to be you, the friend who borrowed it: to have a life to lead, promises to keep and possibilities to take up? Heidegger doubts that one model of being, an independently present thing with properties, can do justice to such different ways of being. The difference calls for investigation; assigning things to categories cannot settle it.

His question about the meaning of being asks how being can be understood. That gives our access to beings a central place in the inquiry, without defining being as whatever happens to matter to us. Whether the route through our understanding can bear the weight Heidegger puts on it is one of the questions we will have to test.

The distinction is easy to abuse. “This cup is used to welcome guests” describes a social role, and it need not be an ontological claim: a historian, an anthropologist or your host might tell you as much in the most ordinary way. To move toward Heidegger’s question, we have to ask about the understanding through which roles, objects, people and actions can be encountered as the kinds of beings they are. Adding the word “meaning” to a description does not turn it into ontology.

The understanding in question is also more than a dictionary definition. You can know what a cup is without being good at defining “cup.” You can recognize a person as someone to whom you owe an answer without silently consulting a definition of “person.” And intelligibility reaches beyond usefulness: a distant star or an unwanted noise can be intelligible without serving any purpose of yours. Heidegger asks what makes these encounters possible, including what our explicit definitions leave unexamined.

Why start with Dasein?

Someone has to conduct this inquiry. More to the point, the being who asks already has the kind of understanding the inquiry sets out to clarify. Heidegger gives the name Dasein to the being that each of us is, considered in relation to this distinctive way of existing.[3]

Think of yourself returning the cup. Being a friend is something you live: you can be attentive, forgetful, generous or resentful, and what you do helps give the friendship its shape. More broadly, a human life holds possibilities that the person can take up, neglect or find closed to them. Heidegger puts this by saying that Dasein’s own being is at issue for it, and he calls this way of being existence, giving the word a narrower sense than simply being real.

Dasein does not name an inner soul or a superior class of people. It is not a racial identity, a moral rank or an achievement reserved for philosophers. The account concerns our manner of being, and it includes the ordinary lives that never pose this question.

Nor does the account imply that everyone spends their days asking who they really are. The question of how to be is usually lived before it is formulated. You may keep returning borrowed things, turning up for work or avoiding a difficult conversation without ever putting a philosophical question to yourself; your relation to your own life can be habitual, evasive or only partly understood.

Heidegger therefore proposes to begin with Dasein’s ordinary existence. His analysis is meant to uncover the structures at work in that existence, not to paint a portrait of an unusually reflective individual. Because Dasein already understands being, clarifying how it exists should help clarify the understanding through which beings become accessible to us.

There are two claims here. One concerns a suitable starting point: if we want to examine the understanding of being, we should investigate a being for whom there is such an understanding. The other concerns philosophical priority: this investigation is supposed to lay the groundwork for asking about being in general. The second claim is considerably stronger. It does not mean that scientists must wait for philosophers to finish before they begin their work; the proposed priority concerns what their inquiries presuppose, not who has to get to work first.

The distinction also helps in reading Being and Time, which was never finished. Its plan had two parts of three divisions each, and the published work contains only the first two divisions of the first part: it develops the analysis of Dasein without completing the inquiry it announced. An argument for beginning here is therefore not the same thing as a completed account of being.[4]

Already in a world

Starting with ourselves might seem to lock the inquiry inside a mind, as if Dasein were a private observer who must first prove that an external world exists. Heidegger thinks this picture starts too late: it separates the observer from the world and only then asks how the two meet.

His term being-in-the-world names a unity in our ordinary existence. You are already dealing with things, living with other people, attending to possibilities and finding yourself in situations you did not arrange. The cup can matter as something to return because a friend, a visit and a promise already belong to your life, and these relations are not all conclusions you first inferred from a neutral sensation.[5]

The “in” here differs from the way a cup is in a cupboard. You certainly have a physical location, but coordinates alone cannot tell us whether you are visiting, keeping someone waiting, feeling at home or struggling to work out what is expected of you. Those ways of being involved belong to the situation you inhabit. Being-in-the-world names this involvement as a basic feature of existence, not as a connection added to an otherwise complete and isolated mind.

World, in this sense, is not just the sum of the objects around you. It is the connected context in which you encounter them and live your life. Nor is it a private picture you are free to invent. The cup may be cracked despite your confidence in it, and your friend may correct your account of the promise: belonging to a world includes being answerable to what you encounter.

Practical examples help because they show how much is already understood before detached inspection begins. They do not show that all understanding is useful action. Wondering, listening, questioning and observing belong to our lives too, and an account that reduced the world to a collection of instruments would be less adequate to those lives.

The method Heidegger proposes is phenomenological: attend to how beings show themselves, and try to make explicit the structures we normally leave unexamined. It is also interpretive: we must work from understandings that may be incomplete or misleading. Describing an encounter vividly is therefore not enough; an interpretation must explain what it claims to disclose and remain open to correction.[6]

Has Heidegger earned this priority?

A serious objection targets the move from our access to beings to the foundations of an account of being. We must understand something in order to inquire into it, but why should the structure of that understanding determine what it is for the things we investigate to be?[7]

The objection has to be put carefully. Finding lead in the glaze corrects a belief about this cup, but that finding alone does not refute Heidegger. He can accept the correction and still ask what makes a chemical investigation intelligible. The investigation already treats something as a physical object with a measurable composition, and its result does not explain all that this way of investigating presupposes.

The harder question is whether Heidegger can establish the authority of his account of those presuppositions. Perhaps he has illuminated a familiar human way of encountering things without identifying the necessary conditions of every possible inquiry. Scientific work can also force us to reconsider basic concepts, not merely supply new facts within settled ones, and Heidegger himself recognizes such changes. A critic can ask how philosophy and the sciences should correct each other, and why the analysis of Dasein deserves the foundational role Heidegger assigns it.

Heidegger’s reply would press the difference between discovering one more fact and clarifying what a kind of being means. When a science revises its basic concepts, the need for that clarification becomes visible. That gives the philosophical question a purpose, but it still leaves the proposed answer to be argued for. We need evidence that the structures Heidegger describes are fundamental, rather than finding their necessity already assumed in the vocabulary used to describe them.

That dispute should not be confused with a claim that humans manufacture physical existence by understanding it. The cup may sit on a shelf while nobody notices it, and prehistoric rock did not wait for a geologist before it existed. The philosophical issue is what follows from the part understanding plays in making beings accessible to inquiry. We can grant that this part deserves investigation while disputing the conclusions Heidegger draws from it.

Application: four questions about the borrowed cup

Consider these four questions:

  1. What is the cup’s glaze made from?
  2. Does the cup still exist, or was it smashed after you returned it?
  3. Why does your friend offer guests this cup rather than a paper one?
  4. What understanding is already at work when you encounter the cup as something to drink from and return to a friend? What would be needed to show that this understanding has priority over an account of the cup as a physical object?

For each question, say what kind of inquiry it invites and which of the lesson’s distinctions it helps bring out; the kinds may overlap. Then explain whether answering the fourth question would prove Heidegger’s claim that this inquiry has philosophical priority.

Full explanatory answer

The first question is ontic. It asks about the material composition of a particular being, and the relevant evidence and methods would ordinarily answer it. Identifying the chemical contents would not by itself explain what it means to understand something as a physical object, although the scientific inquiry depends on some such understanding.

The second is ordinarily ontic too; the word “exist” does not automatically turn it into ontology. You want to know what happened to this cup, and testimony or inspection may settle the matter. A further question, about what counts as the continued existence of an object, could lead into philosophical analysis. The wording matters less than the work the question asks an answer to do.

The third concerns a social role. Perhaps the cup carries a family memory, or perhaps the friend dislikes disposable things; these are possible explanations, not facts the case supplies. Even a rich explanation of hospitality may still concern what people do with a particular being. A description becomes relevant to Heidegger’s ontological inquiry when it raises the question of the understanding through which such relations are possible. “Social” and “ontological” are not interchangeable labels.

The fourth turns from facts about this cup to the understanding presupposed in encountering it. You already recognize drinking as something one can do, borrowing as different from owning, and returning as part of keeping an agreement. Heidegger would ask how these relations belong to a world in which things and people are intelligible. That is more than learning the definition of “cup.” It also involves possibilities, expectations and relations that you may understand only imperfectly.

Answering the fourth question would still not prove Heidegger’s priority claim: listing those relations does not establish that they are the foundation of every possible account of the cup. To defend that priority, an argument would need to show how detached inspection depends on being-in-the-world, and to answer the objection that the analysis has mistaken one familiar perspective for a necessary condition. An unsafe cup remains intelligible as an object of investigation; failing to serve a purpose does not make a being cease to make sense.

Sorting the four questions proves neither that practical involvement is the basis of all understanding nor that Dasein must have the philosophical priority Heidegger gives it. We have distinguished questions and proposed a way to investigate one of them, and a critic may accept the distinction while challenging the explanation. Nor have we shown that the cup depends physically on someone understanding it, or that a dictionary definition could replace the understanding under examination.

The questions can also lead into one another: a scientific finding can change the hospitality, and uncertainty about whether the cup survives can prompt a question about identity. These connections make the fourth question worth pursuing without establishing its priority. That would take a further argument, not a reading of the question’s wording as evidence for its answer.

Toward the next lesson

We now have a reason to examine encounters before treating them as a collection of isolated objects with meanings added to them. “The world in a familiar tool” will test that proposal more closely in the next lesson. If a thing ordinarily makes sense through what we are doing, what happens when it goes missing or no longer works? The answer will need to show what practical involvement reveals without quietly turning everything into a tool.

Sources and limits

  1. Being and Time, §2; William Blattner, Heidegger’s Being and Time: A Reader’s Guide, second edition (Bloomsbury Academic, 2024), chapter 3, “Reading the Introduction.” Everyday understanding is where the inquiry begins, not a proof of its result. The rhythm comparison is an original illustration.
  2. Martin Heidegger, Being and Time, introduction §§1–4, for the distinction between beings and being. The supplied translation is Joan Stambaugh’s, revised by Dennis J. Schmidt (State University of New York Press, 2010). A section number (§) identifies a numbered part of the text across editions; it is not a page number. The digital copy has textual defects and no verified mapping to print pages. For wording relevant to §§2–5, the lesson also uses the abridged primary selection in Richard Kearney and Mara Rainwater, eds., The Continental Philosophy Reader (Routledge, 1996), pp. 27–39, which credits John Macquarrie and Edward Robinson’s translation (Blackwell, 1967). No passage has been reconstructed from commentary or collated with the German.
  3. Being and Time, §§4–5 and 9, for Dasein and existence. The alternate selection’s §§4–5 (pp. 32–39) supports the starting point in ordinary existence. A publisher-authorized excerpt of the Macquarrie–Robinson translation (Harper Perennial reprint, ISBN 9780061575594) confirms the opening of §9’s account of existence and mineness. The excerpt does not reach the defective sentence later in §9 of the supplied EPUB, which is neither quoted nor used as support here.
  4. Being and Time, §8 and the prefatory explanation to the seventh German edition; Dennis J. Schmidt, “Foreword to the Revised Edition,” in the 2010 Stambaugh translation, p. xvi; Blattner, “Notes on Text, Translations, and Linguistic Sources,” note 7. Together they support the lesson’s account of the book’s plan and of how much of it was published; that account is checked against p. xvi of the publisher’s excerpt of Schmidt’s foreword. The lesson concerns the opening inquiry and its limits; it offers no completed interpretation of the whole book. The study orientation states the political context, and understanding these arguments entails no endorsement of Heidegger’s politics or of his philosophical conclusions.
  5. Being and Time, §12, for being-in-the-world. The cup, the promise and the visit are original teaching situations. However well they illustrate the point, they do not establish every claim Heidegger makes about worldhood or about the dependence of theoretical knowledge on practical involvement.
  6. Being and Time, §§5–7, and Blattner, chapter 3, for the phenomenological and interpretive method. The lesson introduces the task of phenomenological interpretation without giving a history of phenomenology or an argument from Greek etymology.
  7. Cristina Lafont, “Hermeneutics,” in Hubert L. Dreyfus and Mark A. Wrathall, eds., A Companion to Heidegger (Blackwell, 2005), pp. 265–269, which frames the difference between attending to our understanding and establishing the stronger claims Heidegger makes for it. The objection and replies are the lesson’s own reconstruction, informed by these pages and by Being and Time, §3; they distinguish changes in scientific facts from the reconsideration of a science’s basic concepts. This is one critical route into the issue, drawn from the opening of Lafont’s chapter, and it does not settle the dispute over the relation between understanding and being.

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