The Sankey diagram is an infrequently used and powerful visualization to show the flow for information through a system. It's especially useful for customer journey maps. Read more in "Everything Starts Out Looking Like a Toy" #109
Amazing article. thanks a lot for writing it.
As a data analyst, I definitely agree with the lack of information a single attribute value provides.
I've been using Sankey diagrams for behavioral analysis for various app companies I've worked with, and I can say the findings are often very insightful (and completely unexpected!). For instance, I once found that new users where getting stuck into a loop during the onboarding process. This would have been close to impossible to find without flow charts.
By the way, SankeyJourney is a great tool to generate Sankey diagram to visualize customer journeys in seconds (sankeyjourney.com)