William Playfair is best known as an ingenious Scot of questionable repute who happened to invent "statistical graphics"--the line, bar, and pie charts we use today.
Yet even those familiar with his work will be surprised to learn that Playfair was, in fact, a Secret agent, carryi.
Some are also aware he developed theories explaining international trade and investment, made contributions to concepts like price indexes and measures of national power, and pioneered strategic analysis.
William Playfair is best known as an ingenious Scot of questionable repute who happened to invent "statistical graphics"--the line, bar, and pie charts we use today