Hmmm, radeng...I'm not sure you've covered that as comprehensively as you possibly could. Still suspicious...these Granny's are clever. Maybe you and Heathrow Director are part of the same Darby & Joan club?
Now, please explain how electricity works
A bit late to answer that one but essentially electricity is just smoke inside the wiring. This is proved by the fact that if you let the smoke out the circuit stops working.
Best to keep that gps switched off then.