I suggest you take just about five minutes to listen to her talk with Steve Inskeep on Morning Edition on NPR
take a listen here:
and in case the embed does not show up on your computer, try this link and click on play.
and you will understand why
1. her book has just hit #10 in hardcover non-fiction on the NY Times best seller list
2. her book is #1 on education on Amazon
which is why if you have not read Reign of Error you should.
Reminder, I reviewed it here