dr. sally shaywitz. she is author of the book "overcoming dyslexia."d tobie meyer, who led the fight in sacramento to get a law passed to acknowledge dyslexia in the education code. so, thank you both for being here. this is your book. you've got another one coming out. this is "overcoming dyslexia," and the whole point of this show is to help people and talk about it. so, dr. shaywitz, let me start with you. you and your husband have been working on this issue for decades. why is this your passion? >> well, dyslexia is our passion because we know it affects so many people -- 1 in 5, as you had mentioned. but as i testified to congress a year ago -- we always need more information, but in the case of dyslexia, we have enough knowledge to do better. so what we have is an action gap, not a knowledge gap. and we need to use the 21st-century knowledge we have, and we have to make sure education is aligned with 21st-century science. and, basically, dyslexia is very prevalent. we study the brain. we know where it is in the brain. we know so much about it, an