Daniel Solis is a contract software engineer who has worked for a number of high-profile clients, including Microsoft Consulting Services, IBM, Lockheed Martin, and PeopleSoft. He has been programming and teaching object-oriented languages and development methods throughout the U.S. and Europe since the early days of C++. It was while teaching numerous seminars on various programming languages that he realized the immense power of diagrams in explaining programming language concepts. Cal Schrotenboer has been programming professionally for over 20 years, initially with Visual Basic but later with C#. Cal has worked as a contractor throughout this period, initially on small direct contracts and eventually graduating to enterprise level contracts with Novartis, Instron, and 21st Century Fox.  For 10 years Cal taught classes over the entire range of .NET subjects (WPF, WCF, Expression Blend, Silverlight, ADO) at Foothill Community College in Los Altos Hills, California. During this period, he also taught MCSE type (Windows Server) classes at Mission Community College in Santa Clara, California as well as other programming related classes at De Anza Community College in Cupertino, California, Skyline Community College in San Bruno California, and Evergreen Community College in San Jose, California.  Cal’s current position with the Fox Networks Group at 21st Century Fox involves all of the technologies which he taught for many years at Foothill College. Because this position is 100% remote, it can be performed from anywhere in the world with a satisfactory Internet connection. This has given Cal the opportunity to move to a new country every three to five months, advancing him on his quest to visit all the countries in the world. While scoring/counting systems vary, he is generally over 75% at this point.