Comment by dgroshev
1 day ago
It seems small in absolute terms, but it's suprisingly visible, even to "normal" people, which was the entire point of making a physical object!
I gave that object to a dozen people without explanation. Only one of them was a designer. All of them preferred G3 after comparing corners by look and touch for a few seconds. Honestly, I was surprised that it was this unanimous; I deliberately made the difference small.
Did you have the labels hidden? Even with that having single shape with corners sorted by the continuity degree might influence the result towards choosing last as best.
For a proper blind test it would help to have separate physical objects. Maybe even with varying corner sizes so that you can't easily rely on bigger=better intuition for comparing two corners of different objects.