Tests have shown that humans a crap at judging the relative size of the slices. But, yeah, it's not a life-or-death chart, so prettiness is surely allowable.

Tests have shown that humans a crap at judging the relative size of the slices. But, yeah, it's not a life-or-death chart, so prettiness is surely allowable. http://en.wikipedia.org/wiki/Pie_chart#Use.2C_effectiveness_and_visual_perception http://en.wikipedia.org/wiki/Pie_chart#Use.2C_effectiveness_...