It's Sunday, it's -21 degrees Celsius outside, and today I am taking a thinking drive. Well, it's not just for thinking, I have some other stuff to do, but either way it's going to be my Sunday Funday. What do you folks have planned for today? Work? Play? Nothing? I'll be spending a couple of hours with friends this morning, then I'm on the road to think, plan, and do something called Propagation Testing. I'll explain that for anyone interested, if they so desire.