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I think I’ve been calling them “Vinn Diagrams” incorrectly all this time, so I’ve never attributed them to John Venn. 

jtotheizzoe:

John Venn popularized the diagram we associate with his name, but he did not invent it. It was likely used at least a century before him, and probably long before that by anyone with a stick, a plan, and some dirt. And he most certainly didn’t call them “Venn diagrams” while he was alive, which would have been a pretty egotistical thing to do.

“You know what would explain this? A ‘Me’ diagram.”

They are related to a way of describing data sets called Euler diagrams, who are named after a guy named Euler who probably didn’t call them “Euler diagrams”. John Venn actually called his “Euler circles”. Each of these diagrams have a simple definition: A set of closed curves drawn in a plane (like on paper) whose spatial representation shows you how their data relate. They are a stunningly simple way to explain logical relationships using geometry, actually.

If the circles are too hard for you to draw, you could always opt for the five-ellipse version:

And who says that freehand circles are impossible to sketch? There’s a whole world championship for that, featuring guys like this:

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via SciShow
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    Reblogging because the five-ellipse diagram is made of awesome.
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    Reblog purely for the 5 way Venn Diagram, I knew how to do 4 ones, they’re easy but I never knew you could do five in 2D...
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    I think I’ve been calling them “Vinn Diagrams” incorrectly all this time, so I’ve never attributed them to John Venn.
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