Teaser Why learn all this?

The third teaser for the book and BooXperience "The Devil is in the Structure".

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Get the book at: http://www.lulu.com/shop/barbara-piechocinska/the-devil-is-in-the-structure/paperback/product-23559626.html ... https://www.youtube.com/watch?v=EYQZMpfiGfc