An update on those propogations. Well it's kinda working, room for refinement. Thing is, I've forgotten why I was doing this in particular, and what I thought I might do with them... if I ever knew in the first place? People who live with cats will recognise this as as a "losing your mouse behind the fridge" activity. And no bother at all, the important thing being to stare at the fridge itself for hours.
