P320 · Evaluation & feedback

Compare structural variants in shared context

Compare design alternatives inside the real host context and hold data constant.

Editorially reviewed

These examples and illustrative results are independently authored teaching materials, not measured model results.

Use case

Choose settings structure: grouped page A, sidebar B or item panels C. Teaching data has the same eight settings/long names. Empty isolated images hide real navigation density.

Mechanism

Keep host header/navigation and identical read-only data on an existing page, switching structure with shareable variant parameters. Declare each structural hypothesis rather than color swaps and stub real writes. Compare identical tasks/widths/data for finding settings, returning and narrow screens, retaining links/observations. Use an explicitly marked prototype route only without a suitable host.

Bad example

Show three differently colored empty pages with different data and pick the prettiest as production implementation.

Good example

Render three structures on one settings route using variant parameters, fixed eight items/long names and real surrounding navigation. Compare finding notifications and returning to overview, stubbing writes. Keep URLs/matched-width screenshots and label the structural prototype.

Why the change matters

Shared host/data reduces confounding and directs comparison toward structure. Real density exposes wrapping, navigation and hierarchy absent from empty drafts.

Observable expectation

Teaching URLs survive refresh with the correct variant/data; long names at 375 pixels do not cover controls. Record task steps/observations rather than color preference. Screenshots state which interactions actually work.

Limits

Prototypes do not establish production quality, authentication or persistence. Real context follows authorization and effect isolation; URLs must not expose private data. Matched data improves comparability but one observation does not represent every user.

Sources and evidence

Read the editorial criteria