Richard believes that religion is just a vehicle to try and understand things which are too complex for humans to understand. Piers questions how he can say with such confidence that a God doesn't exist, Richard replies by saying that it's possible, just like having "fairies at the bottom of your garden".
Richard then explains that as a biologist who studies evolution, he can say with confidence that when it comes to gender "There are two sexes and that's all there is to it". Richard also suggests that people such as JK Rowling have been bullied on social media for standing up for their opinion which he claims is damaging to society by not having the wider debate on the issue.