Venn diagrams typically consist of overlapping circles, with each representing some set of elements, (e.g., things that are cuddly or Broadway shows).

Venn used the diagrams to prove a form of logical statement known as a categorical syllogism. This can be used to model reasoning. Here’s an example: “All computers need power.

Venn diagrams are great for helping us organise two sets of things based on their similarities and their differences. Things that have similarities are shown as overlapping circles, while things ...

Monday's Google Doodle reminds us that it's the 180th anniversary of the birth of John Venn, the English logician whose simple drawing of overlapping circles became a trademark tool of the social ...

FiveThirtyEight's Ben Casselman put it succinctly on Twitter: "This isn't remotely how Venn diagrams work." (His tweet, as of writing, has more retweets than the Clinton campaign's.) He's right.

To celebrate the 180th birthday of John Venn, here are some Boston-themed Venn diagrams. Green Line Delay + Red Line Delay = Park Street Armageddon.