the-hedgehog-effect January 3, 2017 the-hedgehog-effect Posted on January 3, 2017 in Share this article: The hedgehog effect Share this article: [fbcomments url="https://sellfapp.com/sell-more/sales-books-new-year/attachment/the-hedgehog-effect/" width="100%" count="off" num="5" countmsg=""]