Nice one, Mark. Took me right back to the Blitz. Er, no, I wasn’t actually there, but my Mum was — working in an eye hospital in the English industrial midlands while the “black-out” was in force. Towns and cities were kept pitch dark at night to deprive the Hun bombing crews of landmarks. Most of Mum’s patients were people who’d walked full tilt into lamp-posts. Plus ça change …