Venn diagram

Venn diagrams are a combination of three elements: circles, labels and sub-par graphic design.

A three circle Venn diagram known as a threesome.

Named after their inventor, Tony Diagram, VDs are a popular, effective and fun method of conveying information about the constituent parts of any phenomena.

A meta-Venn diagram.

Venn diagrams are so simple to create and interpret they don’t even need explaining.

Tony Diagram, as depicted by James Dean in the cinematic retelling of the Venn diagram story.

The simple but well-meaning cousin of the Venn diagram is the pie chart. These delicious, inedible diagrams show the constituent parts that contribute to a whole phenomena.

A delicious pie chart.

Pie charts can display information about more than pies. They are used to encapsulate information about flans, tarts and dragon attacks.

Dragon attacks for the 2012/13 financial year.