Funnel in : More series is richer

When the story is: ordered drop-off: leads, checkouts, applications. Skip it in cases like: stages are not nested subsets of the same population. Sales-management language of the mid-20th century; later CRM dashboards width (or area) of successive stages Yes if one claim is visible at a glance in Meta, Google and retail print; otherwise link to a full figure.

Yes for lab reports and poster boards if axes, units and a source line are present. Excel or Google Sheets or PowerPoint; export SVG/PDF. Do not rely on hue alone. Label directly and check greyscale. Funnel: honour width (or area) of successive stages, and switch when stages are not nested subsets of the same population.

The core mark of Funnel is width (or area) of successive stages. ordered drop-off: leads, checkouts, applications The eye compares length and position more accurately than area. PowerPoint, Excel or Google Sheets and Meta, Google and retail print share the same geometry. Decoration rarely persuades; it slows reading.