[LeffeBrune]

> The reason is that humans are much better at comparing lengths than they are at comparing angles.

Are you sure 10% increment guides in bar chart have nothing to do with this?

[shriracha]

Hah, so I actually went back and forth on that. The original studies around visual inference also included axis labels on the bar chart. The fact that you CAN label the axis on a bar chart that way is actually an argument people make not to use pie charts.