When I began my Coursera specialization on Interaction Design, I didn’t think I’d be designing an app — let…

Fixing what ain’t broke just to beat your competitors hurts everybody.

You find a great deal on a pair of headphones online, and begin the checkout process. As you’re about to click “Buy” you notice that you mis-typed the shipping address. You search around the page to find a way to edit the address. No pencil. No “edit.”

Three days before leaving for a family trip to Walt Disney World in Orlando, I stepped on the scale.