Conversation so far:
Where are pie charts used in real life
Pie charts are very widely used in the business world and the mass media.
When was the first pie chart created
The earliest known pie chart is generally credited to William Playfair's Statistical Breviary of 1801.
How many kinds of pie charts are there
pie charts kinds: 3D pie chart/perspective pie cake, Doughnut chart, Exploded pie chart, Polar area diagram, Ring chart, sunburst chart, multilevel pie chart, Spie chart, Square chart / Waffle chart.
Can pie charts be replaced with a different kind of chart
Pie charts can be replaced in most cases by other plots such as the bar charts, box chart, dot plot, etc.

Question: Not recommended for use in what circumstances
Self-contained rewrite: The pie chart is not recommended for use in what circumstances