 I'm Tom Power. You're listening to Q. Coming up, more of my conversation with the songwriter Maggie Andrew. It was once considered sloppy science to assign human characteristics to animal subjects. Now there's a new school of thought. There are so many abilities that were thought to be uniquely human. And then it turned out that, oh, you know, maybe they're primates have them as well. And, oh, look, they're in rats. And, oh, it's not just rats. It's actually a great many vertebrates and so on. Research into animal cognition. That's next time on Think.