It ain't nothing - until I call it. - The Umpire My brother was an intramural league referee at App State (that's Appalachian State in NC); that's the most important lesson they taught beginners. So if you were going to start to program a baseball game - where would you start? At some point, you are going to come to the conclusion that on any given play... anything could happen... that is until the Ump calls the play. So is this key person part of the object model? In November Lance Kind & I are going to start on a venture to program a baseball game - in Swift on the iOS Apple platform. We are going to start with Test Driven Development - Red, Green, Refactor. The end goal - to have an App to launch in the Apple Store. I'm not real sure what that App might do... but I trust it will emerge and we will learn quite a lot about the app as we build it. We have set some other objectives: to practice TDD, to learn Swift 5+, to use SwiftUI (a declarative GUI), to