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First Post: Why Write Things Down?

Published: August 4, 2026
Topics: Development, Documentation, Engineering Practice
Summary: Documentation is often viewed as a deliverable. In practice, its greatest value may be preserving context, assumptions, and decision history.

Background

Every engineering organization accumulates decisions. Most of them make sense at the time they are made. The challenge appears six months later when nobody remembers why a particular approach was chosen.

The Missing Context Problem

Code explains what the system does. It rarely explains why the system exists in its current form.

The rationale behind a decision often disappears into meetings, chat messages, tickets, and tribal knowledge. The result is repeated analysis and unnecessary rework.

Working Notes vs. Formal Documentation

Not every idea needs a design document. Sometimes a few paragraphs of captured reasoning are enough to preserve valuable context.


Question:
Should this service own this workflow?

Options considered:
- Keep existing ownership
- Move workflow
- Split responsibility

Decision:
Keep ownership local.

Reason:
Operational complexity outweighed benefits.
    

Closing Thought

Future engineers frequently benefit more from understanding yesterday's reasoning than from reading yesterday's conclusions.