Trust a psychiatrist to get all clever about the ‘divided brain’ and drone on about how it’s profoundly altered human behaviour, culture and society. Whatevs! The only intelligent response to Mr Iain McGilchrist blithering on is to say “Your mum’s a divided brain!”.

Because it’s only be having that sort of vastly perceptive debate that we can move onwards and really learn about ourselves and come to understand the cosmic order and our place within it.