Paper sheets do not have controls on them. That's why "Material Design" sucks too, as all does the rest of the "flat" design fad. Minimal visual cues, analogou

Paper sheets do not have controls on them. That's why "Material Design" sucks too, as all does the rest of the "flat" design fad. Minimal visual cues, analogous (not photo-faithful) to real-world physical objects made GUIs a revolutionary advance in computer use. Both flat design and this new Apple junk (which, let's face it, is a return to hated and nonsensical skeuomorphism) ignore the very concepts that made GUIs so usable.