Greatnan you are probably right about confidence and demeanour stopping invisibility. Maybe that's why I became less invisible after proving myself at university.
I'm always the one to stand up and say 'stop it' when young ones are being a nuisance on the commuter train. I'm not invisible then! Mind you, the Yorkshire accent, to Australian ears, sounds very tough.
Book Title by Their Authors (Parlour Game)

so why! When I'm on my mobility scooter do I become invisible?
