A father and son worked for months to build a toy sailboat. Every night when he came home from work the man and his boy would disappear into the garage for hours. It was a labor of love—love for each other and for the thing they were creating. The wooden hull was painted bright red and it was trimmed with gleaming white sails. When it was finished, they traveled to a nearby lake for the boat's trial run. Before launching it the father tied a string to its stern to keep it from sailing too far. The boat performed beautifully, but before long a motorboat crossing t…