When two people talk about something they assume there is something to talk about and that they have the necessary means (reason, language, shared experience etc) to talk about it. It does not strike us as odd that this is possible; we take it for granted. Friedrich Nietzsche, on the other hand, did not. Nietzsche famously describes a scene in which a madman proclaims the death of God. And if God is dead, says Nietzsche, we can no longer assume that what we are talking about makes any sense at all. Why? because if there is no ultimate explanation for everything, there is no explanation for anything. And if there is no explanation, talk cannot get anywhere.If…