Dave, I can see why a believer would not lay bare his beliefs to someone who thinks such people are all deluded fools.
I do not see why they would lie on a census return or a survey.
I am sure some do but not significant numbers I think.

You have not answered my question. Do you believe that my friends lie to me but would not do so on a survey? I have not suggested that people lie on a census survey, I have named two reasons why they would tick christian when they are not. Habit and superstition. There are probably those who lie but we have no idea how many of any class there are. I have never claimed significant numbers. I have never argued about minorities. You are, once again, putting words in my mouth and creating straw men not of my construction for you to attack. Why keep doing it when everyone can see what you are doing? It is things like that that strengthen my belief that you are an idiot.