I have long harbored a mild, often only semi-conscious, dislike of pie charts. They're not as bad, in my opinion, as using a bar chart when a line chart is called for or vice versa. Still, this piece of affirmation is nice.
As soon as I saw your post I was going to comment that Tufte demolished pie charts in his first book. Then I followed your link and saw that post is quoting Tufte :) I think pie charts are always a bad idea. I cannot think of a single good use for one, under any circumstance. What am I not thinking of?
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