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https://www.amazon.com/dp/0486420841/?tag=pfamazon01-20

https://www.amazon.com/dp/1402171315/?tag=pfamazon01-20

I'm pretty sure the second is the same as the first with 155 pages of introduction by Heath. I was wondering if anyone knew whether this extra material is worth the extra $14 or would I get pretty much the same insight from just reading the first book.

Thanks, any help is appreciated.