Soup - Yes I think the writer was trying to go down the path you are talking about - visual spatial/dyslexia, pros not just cons, etc. - maybe I didn't quote enough. I believe the author covers the subject in other places in the book as well.
I guess completely out of context it might not be clear that Edison Trait = SMART, EXTRA AMAZINGLY CREATIVE.
The book used to be called the Edison Trait - you might be familiar with it under that name. I should have mentioned the other title...(I thought my post was long enough!!
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I am fascinated by that fact that some of these disorders are more 'differences' which we sometimes appreciate the plus side of , but often do not. I liked this book for giving a really positive take on these differences.