★ What’s Good for the iOS Goose Is Often Not Good for the MacOS Gander

This article by John Gruber responds to a question about why he criticizes Apple's mandatory squircle app icon shape on macOS while accepting it on iOS. He argues that iOS and macOS have fundamentally different interaction models: iOS icons are simple one-tap buttons on a limited screen, while macOS icons are richer objects that can be dragged, dropped on, and double-clicked. He warns against bringing iOS limitations (like squircle jail, no AppKit, no terminal, or forced App Store) to macOS, as they would degrade the Mac's precision and power. The piece explores design philosophy, human interface guidelines, and the historical freedom of Mac icon shapes.