ERGONOMICS: A COMPUTER MONITOR THAT WORRIES ABOUT YOUR POSTURE. Building ergonomic smarts into gadgets is a good idea, though my own experiene is that it’s more valuable to change positions frequently than it is to try to find the one perfect position.

I should note that Helen wrote her entire book — now basically finished — on this ball chair without lower back pain, though her neck still bothered her some because of her tendency to hunch her shoulders while typing. Still, she considers the chair a big success.