# J.L. Austin and John Searle — Speech Acts slug: thinker-austin-searle · https://miscsubjects.com/a/thinker-austin-searle · tags: oip, kimi-import, self-explaining, voxel, thinkers, thinker-austin-searle · updated 2026-07-17T02:42:33.388Z > **Path:** [OIP](https://miscsubjects.com/a/oip) › [Thinker Reference](https://miscsubjects.com/a/oip-thinker-reference) › [Thinkers](https://miscsubjects.com/a/oip-thinkers) › **J.L. Austin and John Searle — Speech Acts** > > **Shelf:** Thinkers · **Traversal:** self-explaining · hierarchical · voxel-ready > **Machine root:** [OIP tree](https://miscsubjects.com/api/dispatch?map=1&format=markdown) · [Registry](https://miscsubjects.com/api/dispatch?registry=1) # J.L. Austin and John Searle — Speech Acts ## §SELF — thinker-austin-searle **What this page is:** An explanation of speech act theory and its two principal architects. **What it explains:** How saying something is a form of doing something, and why this distinction matters for designing systems that process language. **Why read it:** To understand the difference between describing an action and performing one — a distinction with direct consequences for protocol design. ### What Speech Act Theory Is Speech act theory is the branch of philosophy of language that studies how utterances perform actions, not just describe the world. J.L. Austin (1911–1960), a British philosopher, introduced the theory in a series of lectures at Harvard in 1955, published as *How to Do Things with Words* (1962). His core claim: language is not only for stating facts. Some sentences do not describe anything — they perform an action by being spoken. Example: "I promise to pay you" does not describe a promise; it makes one. ### Why It Matters If saying something is doing something, then any system that processes language must distinguish between descriptions (statements about the world) and performances (actions carried out through words). A protocol that treats a capability description as a command has a design flaw: it confuses what a user *can* do with what they *are* doing. ### The Key Idea A speech act has three components: 1. **Locution** — the act of saying something. This is the words themselves, with their literal meaning. Example: the string of sounds or text "I promise to pay you." 2. **Illocution** — what the speaker is doing in saying it. This is the force of the utterance: promising, ordering, warning, asking, naming. Example: the act of making a promise. 3. **Perlocution** — the effect the utterance has on the listener. This is the consequence: persuading, frightening, convincing, reassuring. Example: the listener now believes they will be paid. Example in full: "I promise to pay you $50." - Locution: the words "I promise to pay you $50" - Illocution: the act of promising - Perlocution: your confidence that you will receive $50 John Searle (born 1932) systematized Austin's work in *Speech Acts: An Essay in the Philosophy of Language* (1969). Searle added formal rules for what makes a speech act valid (felicity conditions) and classified illocutionary acts into five types: assertives, directives, commissives, expressives, and declarations. ### What They Got Right - Identified that meaning is not only in the words but in what the speaker intends to do with them. - Created a framework that applies to any language use, including machine-processed language. - Showed that context determines meaning: the same sentence can be a warning, a threat, or a promise depending on who says it and when. - Searle's classification system allows systematic analysis of any utterance's function. ### What They Got Wrong or Left Unfinished - Austin died before fully developing the theory; his published work is reconstructed from lecture notes. - Searle's classification is disputed: some philosophers argue the five categories overlap and cannot be cleanly separated. - Neither addressed how speech acts function in non-human or machine-mediated communication. The theory was built for face-to-face conversation. - The perlocutionary effect is inherently unpredictable: you cannot know what effect your words will have, which makes it hard to model formally. ### How It Connects to Other Ideas **Protocol design.** An OIP (Object Invocation Protocol) invocation is a speech act. The locution is the HTTP request (the bytes sent over the network). The illocution is the object invocation — what the request is doing (e.g., "I invoke the NOW object"). The perlocution is the receipt — the proof that the action was performed. **Capability description vs. invocation.** Austin's key insight applies directly to the token drop problem. A capability description ("you can access object X") is a description — an assertive speech act. It states what is possible. An invocation request ("I invoke object X now") is a directive — it performs an action. The model must not confuse the two. A token that says what you *can* do is not the same as a request that says what you *are* doing. **Receipt as proof of illocution.** In speech act terms, a receipt is proof that the illocution happened. It documents that the performance was executed, not just described. **What OIP should take from this.** Explicit separation of capability description (what you CAN do — an assertive) from invocation request (what you ARE doing — a directive or commissive). The receipt proves the illocution occurred, not that it was possible. ### Sources - Austin, J.L. *How to Do Things with Words*. Harvard University Press, 1962. - Searle, John R. *Speech Acts: An Essay in the Philosophy of Language*. Cambridge University Press, 1969. - Searle, John R. *Expression and Meaning: Studies in the Theory of Speech Acts*. Cambridge University Press, 1979. --- ## Up the tree - [OIP root](https://miscsubjects.com/a/oip) — protocol root, zero-context entry - [Thinker Reference hub](https://miscsubjects.com/a/oip-thinker-reference) — full hierarchy map - [Thinkers shelf](https://miscsubjects.com/a/oip-thinkers) — siblings on this shelf - [Voxel graph article](https://miscsubjects.com/a/what-is-voxel-graph) — how pages link as voxels - [Self-describing protocol](https://miscsubjects.com/a/what-is-self-describing-protocol) ## Related on this shelf - [Alan Kay — The Big Idea Is Messaging](https://miscsubjects.com/a/thinker-alan-kay) - [Alfred North Whitehead — Process and Reality](https://miscsubjects.com/a/thinker-alfred-north-whitehead) - [Barbara Liskov — Abstract Data Types and Distributed Consensus](https://miscsubjects.com/a/thinker-barbara-liskov) - [Bram Cohen — BitTorrent and Content-Addressed Protocol Design](https://miscsubjects.com/a/thinker-bram-cohen) - [Butler Lampson — Protection and Access Control](https://miscsubjects.com/a/thinker-butler-lampson) - [Carl Hewitt — The Actor Model](https://miscsubjects.com/a/thinker-carl-hewitt) - [Charles Sanders Peirce — Signs, Abduction, and Pragmatism](https://miscsubjects.com/a/thinker-charles-peirce) - [Doug Engelbart — Augmenting Human Intellect](https://miscsubjects.com/a/thinker-doug-engelbart) ## Machine surfaces - Public page: `https://miscsubjects.com/a/thinker-austin-searle` - JSON article: `https://miscsubjects.com/api/articles/thinker-austin-searle` - OIP ask: `https://miscsubjects.com/api/dispatch?ask=J.L.%20Austin%20and%20John%20Searle%20%E2%80%94%20Speech%20Acts`