The Conduit Metaphor of Communication

The conduit metaphor represents communication as the transfer of meanings from one person to another. Ideas become objects, words become containers, and speaking or writing becomes a way of sending those containers. Familiar expressions about putting ideas into words or getting a message across can participate in this pattern.

Michael J. Reddy developed the account in “The conduit metaphor: A case of frame conflict in our language about language”. The chapter appeared in the 1979 collection Metaphor and Thought and was included in its 1993 second edition. Lakoff and Johnson use it to explain how a metaphor can make some aspects of an activity prominent while hiding others.

How the image is organised

The metaphor is more specific than the observation that information travels. It supplies a picture of where meaning is located and what participants do with it. The examples in the table are constructed illustrations.

Part of the picture	Illustrative wording	Assumption to examine
Ideas are transferable objects	“I handed the team my idea.”	Can an idea be treated as the same object for everyone involved?
Expressions are containers	“The paragraph contains the answer.”	Is the required meaning available independently of the reader's knowledge and question?
Communication is movement	“My explanation did not get through.”	Is the problem a blocked route, or a difference in interpretation?
Understanding is taking something out	“She extracted the message from the speech.”	What work does the listener contribute to deciding what matters?

These expressions can be useful shortcuts. The analytical issue is what happens when a shortcut becomes a complete explanation. A document can contain a sequence of printed words without containing every implication a reader will draw from them.

What the metaphor helps us notice

Communication does involve material arrangements: people speak, texts are printed, recordings are transmitted and messages become available to audiences. A delivery image can organise questions about access, delay, interruption and whether a message reached someone at all.

The difficulty begins when successful transmission is treated as sufficient for shared understanding. Lakoff and Johnson emphasise that context and participants can be necessary to determining a sentence's meaning. A sentence can be understandable in a shared situation while being unclear outside it. A perfectly delivered email can still leave its recipients with different interpretations of what they are being asked to do.

A worked example: the same words, different situations

Consider the constructed message “Leave some room”. At a dinner table it might ask someone to move a chair. In a document review it might concern layout. During planning it might ask for flexibility in a schedule. The words alone do not identify the relevant space, object or activity.

Now suppose two colleagues are discussing a deadline. One means that the schedule should include time for revision; the other thinks the request concerns the size of the final report. Repeating the same sentence more loudly would not necessarily resolve the difference. The missing information concerns what is to have room and for what purpose.

This illustration shows why an account of communication needs more than a sender, a receiver and an intact signal. It does not imply that words have no conventional meanings or that interpretation is unlimited. Shared language, the surrounding conversation and the task constrain the plausible readings.

Context and the listener's contribution

In the preface to Where Metaphors Come From, Kövecses returns to Reddy's criticism of meanings imagined as already packaged objects. He describes meaning making through shared attention, perspective and the circumstances in which people communicate.

For a wiki article, this directs attention to the reader's likely background. Defining a term once may be insufficient if its example requires knowledge the reader does not have. An explanation can make its assumptions visible, show the intermediate steps and offer a contrasting example. These are editorial applications of the contextual account, not findings of an intervention study.

The same distinction matters when documenting a conversation. Record how another participant responds, asks for clarification or corrects an interpretation. Their response is evidence about that interaction. It should not be replaced by the analyst's assumption that the intended meaning was transferred unchanged.

Metaphor, engineering and explanation

There are literal conduits and technical communication channels. Using a transmission model to measure signals does not automatically commit someone to the claim that all human meaning is contained in those signals. The level of explanation matters: reliable delivery and successful interpretation answer related but different questions.

Likewise, the conduit metaphor is not a reason to prohibit ordinary expressions such as “send a message”. The useful question is whether a particular account overlooks the circumstances needed for understanding. Replacing every familiar phrase would not remove the need to interpret the replacement.

Questions for reading and writing

When reviewing an explanation, ask what the audience must already know, which terms depend on the current situation, and what successful understanding would look like. If a reader disagrees, consider whether the issue concerns wording, evidence, background assumptions or a genuinely different judgement.

For accounts of personal experience, distinguish the speaker's words from a listener's paraphrase. A metaphor involving distance, weight or movement may invite several interpretations. Recording a clarification preserves more evidence than assuming that one fixed meaning was inside the expression all along.

Related pages

• Metaphor, Context and Speaker Meaning
• Metaphor in Education and Learning
• Metaphor in Therapeutic Conversation
• Metaphor Across Languages and Cultures
• Metaphor Research Library