David S. Platt teaches User Experience and Programming Xamarin at Harvard University Extension School and at companies all over the world. He’s the author of 11 programming books, including The Joy of UX (Addison-Wesley Professional, 2016) and Why Software Sucks (Addison-Wesley Professional, 2006). He is the back page columnist for the monthly MSDN Magazine (archives at https://msdn.microsoft.com/en-us/magazine/mt149362?author=david+platt). Microsoft named him a Software Legend in 2002. He wonders whether he should tape down two of his daughter’s fingers so she learns how to count in octal.