Apple’s Icons Have That Shape for a Very Good Reason

For those interested in something similar regarding the iPhone X notch: https://medium.com/tall-west/no-cutting-corners-on-the-iphon...

Related folklore about Jobs and round rects. May even be a better explanation.

https://www.folklore.org/StoryView.py?story=Round_Rects_Are_...

Not really. The whole point of the article is that Apple currently uses a more sophisticated design than those "round rects" that everyone else now uses by default.

Is "tangency" really a widespread term for curvature discontinuity?

(2017), but still good.