Yes . . . We do find
Venn diagrams useful.
www.xkcd.com
www.xkcd.com
www.xkcd.com
www.xkcd.com
Not only is
this nasty and
mean-spirited,
but it’s not
even a
legitimate
Venn diagram.
What, for
instance, is
meant by the
intersection of
Christians and
Muslims?
This is a much better example. The circles
represent traits, and various intersections refer to
overlays of those traits.
Venn diagrams are the only interesting
thing we know about John Venn.
It’s been suggested that this was
Venn’s first diagram.