[lupire]

15% improvement in menu selection is an absolute game changer for professional menu selectors who spend over half their workday selecting items from menus. Unfortunately, very few users are menu selection professionals, and such professionals might see power gains than average users.

Task completion speed would be a better measurement, to capture the effect of the pie menu interfering with the main task by temporarily obscuring it from view.

[DonHopkins]

I'm neither a professional mouse clicker nor professional menu selector, yet I and a lot of other people click mice and select menus all day.

For example, there are many professional, indie, hobbyist, and ametuer people called "artists" who use pie menus in tools like Blender and Rhino/Grasshopper and Maya all day, and it saves them a lot of valuable time, and vanishingly few of them are actually professional menu selectors.

And thanks to being "self revealing" and supporting "rehearsal", pie menus make it easy for novice menu selectors to become expert menu selectors, with a smooth learning curve.

[benatkin]

What the pie menus in Blender look like:

https://blender.stackexchange.com/questions/153195/what-are-...

This seems to be separate from the fad of menus that look like donut charts.