What has intelligence? Slime moulds, ants, fifth-graders, shrimp, neurons, ChatGPT, fish shoals, border collies, crowds, birds, you and me?
In 2017, Simon McCarthy-Jones wrote an article about schizophrenia for The Conversation. The piece, he jokes, got read by more than two people, which, as an academic—he’s an associate professor of clinical psychology at Trinity College Dublin—was a thrill.
Twenty-five years ago, the burgeoning science of consciousness studies was rife with promise. With cutting-edge neuroimaging tools leading to new research programmes, the neuroscientist Christof Koch was so optimistic, he bet a case of wine that we’d uncover its secrets by now.