I'm not sure, I didn't read the printed version
I apprciatedt the info that was useful for my self as well my children. The book presented new info that I hadn't read/heard before and I have read most of Roberts books.
No I have not listened to any before.
Difficult to answer, multiple points to ponder upon. I will definetly return to this audible book again in the future. Very easy listen.
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