# OE-0006: Understanding

**Status:** Draft
**Version:** 0.2.0-draft
**Depends on:** OE-0005 (Survey)
**Phase:** The Bedrock Phase

## Overview

Understanding is a contextualized model of reality derived from observation and organized through survey.

## Definition

Understanding is the state a practitioner reaches when they can explain not only what a system does, but why it was designed that way, what alternatives were considered, and what trade-offs were made.

Understanding is distinct from information. Information is the raw material — facts, measurements, records. Understanding is the structured relationship between information, context, and reality. A database contains information. An engineer who can explain the reasoning behind every entry in that database holds understanding.

## From Observation to Understanding

Understanding follows a path through the specification's dependency chain:

Observation (OE-0004) -> Survey (OE-0005) -> Understanding (OE-0006) -> Verification (OE-0007)

Observation provides the raw input. Survey organizes observations into a coherent picture. Understanding is the model the practitioner constructs from that picture. Verification (OE-0007) then tests that model against reality.

Understanding is provisional until verified. Even after verification, understanding remains subject to spiral re-evaluation — the accumulated deepening that comes from returning to the same question with more experience.

## Understanding as What the Thread Carries

When one generation passes engineering knowledge to the next, what they pass is understanding — the deep comprehension of why things are the way they are, not merely what things are.

Open Engineer's purpose is to preserve this understanding so that each generation can begin closer to bedrock than the last. The mechanism for that preservation is the engineering context record (OE-0003).

## Single Responsibility

This document defines understanding. It does not define verification (see OE-0007). It references it.

## Applicable Laws

This document is governed by all Engineering Laws defined in `laws/engineering-laws.md`.