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Two heads aren't better than one when it's really only one head. ~ Scott E. Page, Caltech professor
Source：Crowdsourcing http://www.amazon.com/gp/product/0307396207?ie=UTF8&tag=a0b8a8-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=0307396207
Andrew's email：andrewlo0623@gmail.com
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