Sankey diagram

A new card for the catalogue.

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Most flows are invisible. Money moves through a budget, attention through a day, energy through an organization, but we rarely see where it goes or how much arrives at each destination. A Sankey diagram makes that visible: the wide stream entering a process and the thin trickle reaching the outcome. The gap between input and output, often assumed away, becomes undeniable.

See also: Pipes and tanks, Funnel, Bottleneck, Filters, Dashboard, Measurement, Root causes, Decision tree, Causal loops.