Here’s a humorous little story from Andy Hertzfeld, a member of Apple’s original Macintosh team. Bill Atkinson did some clever programming to draw circles and ovals quickly on a Mac. But Steve Jobs had something else in mind.
Bill fired up his demo and it quickly filled the Lisa screen with randomly-sized ovals, faster than you thought was possible. But something was bothering Steve Jobs. “Well, circles and ovals are good, but how about drawing rectangles with rounded corners? Can we do that now, too?”