Use a Diagram Without Hiding the Tradeoff
Shashank Agarwal
Every diagram leaves something out. The writing around it should make that choice understandable, especially when the omitted detail affects a buyer or engineering decision.
Quick answer: State the diagram's purpose, label conceptual versus observed content and name relevant omissions. Explain tradeoffs in a companion table or focused view. Do not let a clean arrow imply guaranteed delivery, automatic permission or a proven improvement.
Read the arrow as a question
The workflow below shows a conceptual progression from captured evidence to engineering review.
Illustrative workflow. Arrows show the explanatory sequence, not guaranteed execution or an automatically applied fix.
A reader should ask what evidence is passed between stages and what happens when it is incomplete.
Put the omitted decision beside the figure
| Simplification | Companion question |
|---|---|
| One capture stage | Which operations were actually instrumented? |
| One evaluation stage | Which compatible checks ran? |
| One investigation stage | What supports the recommendation? |
| One test stage | Which conditions and scenarios were exercised? |
| One review stage | Who accepts the candidate and owns deployment? |
This is a proposed diagram-review method, not a claim that the figure proves a particular run succeeded.
Preserve the source and version
A drawing can become obsolete when an interface or responsibility changes. Microsoft's architecture-diagram guidance recommends keeping diagram sources with versioned workload assets.
Retain the caption and underlying source when updating the view. A new image timestamp is not itself evidence that the architecture changed.
Choose detail deliberately
A deeper sequence diagram may be needed for retries or handoffs. An overview can remain simple if it links to that detail instead of silently implying it.
See the evaluation-report guide and current workflow for artifacts that support conclusions beyond the drawing.
I'm Shashank Agarwal, author of Intelligence at Scale, founder and CEO of Noveum AI and creator of API.market. Follow my work on LinkedIn. Drafted with AI assistance.
Get Early Access to Noveum.ai Platform
Join the select group of AI teams optimizing their models with our data-driven platform. We're onboarding users in limited batches to ensure a premium experience.