Software preserves implementation. It rarely preserves intent.
That is why new engineers can inherit code, tests, deployment pipelines, and dashboards while still not understanding the system.
They are missing history.
Ask a senior engineer why a system behaves a certain way and they often answer with a story:
> Three years ago we had an outage...
> We originally wanted to...
> That service exists because...
They are not reading code. They are remembering history.
Experience is the ability to mentally travel back to previous engineering decisions.
Imagine clicking on a firewall rule and seeing the proposal that introduced it, the incident that motivated it, the alternatives rejected, the expected outcome, the engineers involved, and the assumptions still requiring validation.
You are no longer looking only at configuration. You are looking at history.
Future engineers do not need to reconstruct the past. They can inspect it.
AI needs the same context new engineers need. Not just more code. More history.
Why this service exists. Why this exception remains. Why this migration stopped halfway.
Those are historical questions, not just technical ones.
Every important decision should become easier to inspect over time, not harder.
Every incident should make future engineers more capable.
The best teams do not merely build software. They build organizations that remember.