Charles Fernyhough thinks that if we could see other people’s thoughts, it would be like Wittgenstein’s lion trying to have a conversation with a human. In Wittgenstein’s philosophy, ‘if a lion could speak, we could not understand him’. His theory is that a lion’s existence is so different from a human being’s that, despite a common language, we would not be able to translate the meaning and intention of the lion’s words. They would not make any sense to us, because we would not be able to find common grounds of communication.