So, there is a movement in the data science community to kill the pie chart because all pie charts are bad. And much of the criticism is valid. Pie charts can be replaced by better representations, usually starting with bar charts, to convey more accurate and easier to interpret relational comparisons between categories. It’s harder to get away with willfully distorting perspective in a bar chart than it is in a pie chart – always ask to see the percentage values in someone else’s dense pie chart. When it does come into play is a binary comparison. That can be powerful. > 3, use a bar chart.