Draw when the relationship is the information
Prose is efficient for a sequence of claims. A diagram is often better for system boundaries, flows, feedback loops, architecture, dependencies, spatial layouts, and comparisons where seeing the whole arrangement matters.
Give the drawing one job
A visual note becomes easier to retrieve when it answers one clear question. Title it around that question, keep labels explicit, and avoid turning one canvas into a permanent dumping ground for unrelated diagrams.
Combine text and drawing instead of choosing one forever
A small written note can state the conclusion while a drawing explains the structure behind it. The two artifacts can serve different future uses: quick scanning, detailed reasoning, presentation, or project planning.
Make important text searchable
Labels inside a diagram are not decoration. Descriptive node names, arrows, and short annotations make a visual note easier to understand later and give search systems more meaningful text to retrieve.
Excalidraw is a first-class note type in Zettory
Create an Excalidraw drawing as its own note, keep it beside Markdown, links, and images, and bring it onto a Kanban workspace when it becomes part of a project. Zettory also includes visible drawing text in its shared search and knowledge workflows.