LIMIT THE NUMBER OF DETAILS

Summary from the TLDR Design newsletter

Every feature, control, mode, and exception competes for a team's finite attention, so limiting the number of details is what makes perfecting each one possible. The original iPod concentrated a thousand songs into one scroll wheel, while the Porsche 918's touchscreen reportedly controlled more than 800 functions. Software accumulates because another button is essentially free. Volkswagen has admitted that deleting physical buttons was a mistake.