---
title: "octopus-english-realizer — Mova code model"
description: "Mova code model of tools/octopus/src/realize.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/tools/octopus/src/realize.rs.groupant/"
---
Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants**

This page as HTML: <https://groupants.elamur.ai/free/en/mova/tools/octopus/src/realize.rs.groupant/>

# octopus-english-realizer

The groupant beside tools/octopus/src/realize.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.

## Facts

- **kind:** groupant
- **status:** partial source bound model
- **source:** [`tools/octopus/src/realize.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/octopus/src/realize.rs)
- **source SHA-256:** `3d33799d90c46fe3…`
- **repository folder:** [`tools/octopus/src/realize.rs.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/octopus/src/realize.rs.groupant)
- **repository commit:** `855da7bd4a7b`

> **Implementation material.** A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.

## Components

| component | label | where |
|---|---|---|
| **approximant** | partial | [Forward approximant](#forward-approximant) |
| **ast** | partial | `syntax.json` |
| **composition** | partial | [Composition](#composition) |
| **cost** | partial | [Cost](#cost) |
| **descriptant** | present | [Descriptant](#descriptant) |
| **invariant** | partial | [Invariant](#invariant) |
| **tests** | finite evidence | [tests](#tests) |

## Obernants

The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.

| id | type | label | where |
|---|---|---|---|
| `behavior_complement` | behavior_complement | partial source derived model | [behavior_complement](#behavior-complement) |
| `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) |

## Model text


### model

## octopus-english-realizer

### Descriptant

Small deterministic English realizer for animals' answers: counted nouns, verb agreement, past forms from Mova's morphology, lists and sentences. Source: `tools/octopus/src/realize.rs`.

### Forward approximant

noun(n,l)= l if n==1 else Morph.inflect(l,NNS); noun_count = 'n noun'; be/was/has agree with n; past/participle = Morph.inflect(l,VBD/VBN); list joins with ', ' and ' and '; sentence capitalises the first letter and adds a full stop unless the text ends with . ! ?; could_not(v,o,b) = 'I could not v o because b.'; paragraph joins non-empty sentences.

### Invariant

Output states only the caller's values; deterministic; number agreement follows the given count.

### Cost

O(output length) plus dictionary lookups.

### Composition

Parent: `native-octopus-deputy`. Pure functions; plural and past forms from en::morph::Morph (built-in dictionary plus suffix rules).

### behavior_complement

Not done: articles, irregular plurals absent from the dictionary beyond suffix rules, pronoun choice, tense other than present and simple past, any content selection. Counterexample checked: past('get') = 'got' from the dictionary, not 'getted'. Evidence status: source-derived model with finite checks, not a proof.

### reverse_reconstruction

A realized sentence determines the counts and items it names; the function and inputs are recoverable only up to equivalent phrasings (e.g. 0 and 2 both give plurals). No unique inverse is claimed.

### Epoch 2026-11-04 (Whales in English)

Epoch 2026-11-04: shared thousands(), utc() and report(Report) for animals' answers (used by the Whales; Sea Spider keeps its own copies).

### tests

#### Checks

Command: cargo test --manifest-path tools/octopus/Cargo.toml --offline --locked with MOVA_OCTOPUS_TEST_MODEL (16 tests including the unchanged native controls; two identical runs on 2026-11-04).

Negative controls 2026-11-04: binding arguments to the first action instead of through the parse, allowing every robots decision, and ordering jobs by arrival only each turn the English tests red; restored afterwards.
These are finite fixtures and one live smoke against the project's own site (2026-11-04); not a proof.

2026-11-04: cargo test --manifest-path tools/whale/Cargo.toml --offline --locked with MOVA_OCTOPUS_TEST_MODEL=$MOVA_DATA/download/0/0.4/en.bin (unit tests incl. 5 service tests, 2 realizer tests, 3 length-gate tests; 2 English tests: 18 prompts, 10 refusals, a served end-to-end run with the real mova-whale child and a fake Codex executable; two identical runs on 2026-11-04)