I’m back in another beautiful city this week – Vienna, Austria. First food stop was to have some tasty Vienna sausages with a special sauce. Strange as it seems, I also like to try out a country’s version of Texican food when I can. I actually had a decent helping of nachos one night, including chili. Sad thing was the chili had beans in it…a Texas sacrilege! One of the students brought up a question this week that has recurred before. He asked why a Service is not just considered a type (sub-class...