The Little Mermaid, Disney’s latest live action remake of a cartoon classic, has been out for a week and is raising a question for all of us — and no, it’s not how much Awkwafina rap it takes to go deaf.
Instead, it’s one more often seen in biology. As animals have the ability to send each other all sorts of messages — brightly coloured frogs warning predators of their toxicity, loud bird calls to let a predator know they’ve been spotted — there’s the obvious question: what motivates any of them to tell each other the truth?
In evolutionary science, the argument
