He imagined a user being blindfolded, spun around, and dropped onto a random page of his app. He realized they’d have no idea where they were. He added clear breadcrumbs and a persistent "Home" icon.
A week later, they ran a user test. A grandmother, who usually struggled with tech, tapped through the app in seconds. Don’t Make Me Think, Revisited: A Common Sense ...
He made the "Checkout" button large, green, and exactly where a thumb expects it to be. He imagined a user being blindfolded, spun around,