ISOTYPE — the International System Of TYpographic Picture Education — was developed in 1925 Vienna by social scientist Otto Neurath, transformer Marie Reidemeister, and graphic designer Gerd Arntz to teach economic and social statistics to working-class audiences who could not read German. The visual language is austere and exact: cream paper, deep-black pictograms, and a single saturated red, arranged on a strict Bauhaus grid.

Each chart counts by repeating a small icon — one figure equals 1,000 people, one factory equals 10,000 workers — turning census data into something a child can read across a room. ISOTYPE is the ancestor of every pictogram, airport sign, and stat-block infographic that followed.