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<h2 class="first-section-title"><a name="42"></a><a name="introlev1sec8"></a>Companion Files</h2><p class="first-para">Software engineering is like baseball. The only way you will ever acquire any degree of skill is to practice and scrimmage whenever you get the chance. To this end, I have included the source code for most of the examples in this book in a downloadable file available at <a target="_top" class="url" href="http://www.wordware.com/memory">www.wordware.com/memory</a>.</p>
<p class="para">Dick Feynman, who was awarded the Nobel Prize in physics in 1965, believed that the key to discovery and insight was playful experimentation. Dick was the kind of guy who followed his own advice. In his biography, <I>Surely You're Joking, Mr. Feynman</I>, Dick recounts how spinning plates in a dining hall at Cornell led to historic work in quantum mechanics. By testing a variety of new ideas and comparing the results to your predictions, you force yourself to <a name="43"></a><a name="IDX-xxv"></a>gain a better understanding of how things work. This approach also gives you the hands-on experience necessary to nurture a sense of intuition.</p>
<p class="last-para">It is in this spirit that I provide this book's source code in the downloadable files. By all means, modify it, hack it, and play with it. Try new things and see where they lead you. Make predictions and see if empirical results support your predictions. If the results don't, then try to determine why and construct alternative explanations. Test those explanations. Add new functionality and see how it affects things. Take away components and see what happens. Bet a large sum of money with a friend to see who can implement the best improvement. But above all, have fun.</p>
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