Origins and Purpose Seiki Shimizu’s project grows from a need common to many disciplines: to compare, categorize, and make sense of disparate forms of graphical information. A “chart of charts” is a meta-visualization—an organized survey of chart types, each a compact solution for encoding data. Rather than presenting a single dataset, Shimizu’s work maps the design space itself: relationships among chart forms, the tasks they are best suited for (comparison, distribution, composition, trend), and aesthetic choices that impact legibility and interpretation.