geoffkait,
Better question is what happened to you last night. Why are you so negatively-charged this morning and without any wit?
Speaking of directionality, I do believe in cable directionality. They always go from what is connected to what it is connected to. Or the other way around, depending on what side I decide to look at first.
Now, why not some fuse directionality enlightenment sprinkled with a little bit of analog vs. digital? Light one, just for sunday morning. Before your bike ride.