The most expensive part of AI-assisted work is not the first draft.
It’s the second Tuesday.
You have a great working session. The model helps you explore options, sketch a design, generate a starter implementation. You feel momentum.
Then time passes. Context evaporates. Someone asks, “Why did we do it this way?” and you realize the reasoning never made it out of the chat.
That’s wherea lightweight one-page spec earns its keep.
Not a 12-page design doc. Not process theater.
This one-page artifact captures the minimum needed for continuity:
- Purpose: what problem we’re actually solving
- Constraints: performance, security, interfaces, deadlines
- Decisions: what we chose and what we rejected
- Acceptance criteria: how we’ll know it’s done
- Risks / unknowns: what could bite us later
If you’re using AI as a thinking partner, a spec is how you keep authorship.
It turns a productive session into a durable decision.
Without it, you don’t have a design.
You have a vibe.