Marion Donovan, inventor of the first disposable diaper, told Barbara Walters that one simple question guided her work: "What do I think will help a lot of people and most certainly will help me?"
The advantage — and the downside — of this philosophy was that when she first started out in the 1940s men controlled manufacturing. And to them, the problems she was fixing might as well not have existed.
Image: FLICKR, JON GOOD
