Data visualization traces four decades of Apple's Human Interface Guidelines

A new interactive chart maps how Apple's interface guidelines have shifted across five editions—1982, 1987, 1992, 2008, and today—showing the relative space devoted to topics like menus, icons, windows, and accessibility. Each edition is rendered at equal height, with ribbon width indicating topic share and color coding whether a category held steady, expanded, reshaped, arrived, or dissolved between editions.