This book was inspired by a letter the author received from Dr. Oliver Sacks in 1999 advising that the story contained in these pages needed to be told in a book length account. "Hidden Handednes" treats an untouched subject; the story of what really happens when a child's natural handedness is reversed, and the incredible consequences of making the return journey as an adult. The premise of the book is that millions of humans are neurologically "detoured" by handedness reversals - that they become something that they would not otherwise be - submergees. The author tells what it was like to return from the submergee state by becoming left-handed again, to become an emergee. In addition to experiencing a wonderful "awakening" of body and mind, the search for others with similar histories and resources turned into the quest, one that led to the challenge from Sacks and other professionals who heard the story, and asked that this book be written.