I meant to say that the mathematician’s belief that there is some relationship between maths and the real world is a faith; it can’t be proven, but he feels it very strongly. For that matter, the totally irreligious man’s belief that there even is a real world, corresponding to what his senses show him, can’t be proven. John Doe and the most brilliant of physicists both have to take that on faith.”
“And they don’t conduct ceremonies symbolizing the belief,” Anne added, “and train specialists to reassure them of it every seven days.”