Numeracy: When it's not quite all there
For your consideration, two examples of falling short, literally, on the numbers.
Our first specimen:
Rule No. 1 (or 2, I forget) of infographics: If you use a pie chart, the percentages should add to 100 because people, seeing a circle, believe they are seeing the whole. You do the math ...
And then, just for fun, ponder this one:
Need any more be said?