The first rule of Isotype is that greater quantities are not represented by an enlarged pictogram but by a greater number of the same-sized pictogram.

Otto Karl Wilhelm Neurath (German: [ˈnɔʏʀaːt]; 10 December 1882 – 22 December 1945) was an Austrian-born philosopher of science, sociologist, and political economist. He was also the inventor of the ISOTYPE method of pictorial statistics and an innovator in museum practice. Before he fled his native country in 1934, Neurath was one of the leading figures of the Vienna Circle.

"Isotype", an acronymic nickname for the project's full title: International System of Typographic Picture Education.[8]

The forerunner of contemporary Infographics, he initially called this the Vienna Method of Pictorial Statistics.