How Venn Diagrams Became So Beloved in Classrooms and Internet Memes
Briefly

Venn diagrams may not have solved any long-standing open problems, but their compact representation of group relationships explains their enduring appeal in classrooms, infographics and Internet memes.
Venn debuted his diagrams in 1880 as a method for visualizing contemporary advances in logic, which then found application in the closely related branch of math called set theory.
Seeing one's problem often clarifies it, much like in using scatter plots in statistics or drawing shapes in geometry.
Venn diagrams help us navigate everyday logic problems and give rise to surprising geometric questions that mathematicians still study today.
Read at www.scientificamerican.com
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