The To-Do List That Knows Where You Are

November 8, 2001

IN the wired world of the 21st century, it seems impossible to forget anything. A cartoon pops up on your computer screen reminding you that it’s a friend’s birthday. An exclamation mark surfaces on your palmtop alerting you to a looming project deadline. Every once in a while your cellphone breaks into spasms of music to signal your next appointment.