Apple should simplify multi-window management on the iPhone Duo by borrowing from iPadOS multitasking features.

design How things should be made and judged: what makes a design good, who should do the designing, and what an interface is for.

simplicity Less, but better: reduction as the way to make something good, and the argument about when it goes too far.

Apple The App Store toll, the turn to services, and whether the company that made the machines is still that company.