<p> Adapted from <em>A Fine Line: How Design Strategies Are Shaping the Future of Business</em> by Hartmut Esslinger, founder of frog design. Copyright Jossey-Bass, 2009.<br /> Read more or purchase the book at <a href=&quot;http://www.josseybass.com/WileyCDA/WileyTitle/productCd-0470451025.html&quot;>the official site</a>.</p>
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