About a month ago, I wrote about the difficulty of staffing the U.S. Department of Education early in the Trump administration. The secretary, it seemed to me, had been put in a particularly tough ...

A Venn diagram can show data sets such as preferences in market research. When sets intersect (overlap), the elements in the intersection are members of both sets. When the sets have no elements in ...

In his book The Mathematical Universe, mathematician William Dunham wrote of John Venn’s namesake legacy, the Venn diagram, “No one in the long history of mathematics ever became better known for less ...

Venn diagrams are all the rage these days but one company seemingly didn’t get what they were about after producing one that appeared to disparage their work ethos. When done correctly the drawings ...