 But at what point did this ability emerge? We don't know. But I hope I live long enough to see that discovery of the first artwork somewhere in Africa. And who knows how old it will be? And if it's figurative in nature, that would just be amazing. Another conversation to come on as it happens, I'm sure. Professor, I'm glad we could speak. Thank you. My pleasure. Adam Brum is a professor of archaeology at Griffith University in Australia. We reached him in Brisbane.