7  Reproducible Reporting

A multiverse earns trust only when someone else can rerun it and land on the same distribution. The fifth verb writes shareable artifacts, and a few surrounding tools make the whole pipeline reproducible.

7.1 The reporting helper

report_multiverse() computes the vibration summary, saves a specification curve and a volcano, and writes the summary table to disk.

report_multiverse(results, dir = "outputs")

7.2 A durable pipeline

Four tools keep a multiverse rerunnable over time:

• targets builds a dependency graph and reruns only the specifications that changed, which matters when a grid takes hours.
• renv pins package versions so the same grid fits the same way next year.
• Quarto weaves code, figures, and prose into one shareable report.
• set.seed() fixes imputation and resampling so results reproduce exactly.

7.3 Pre-specifying the grid

The strongest guard against a garden of forking paths is to write the decision space down before seeing outcomes and to register it. A pre-specified grid turns analytic flexibility from a hidden liberty into a declared, auditable object, which is the disposition this workflow is built to support.