>> This presumes people hold on to a belief because it is valuable to them. I'm not so sure of that. Some people hold a belief simply because they were raised

>> This presumes people hold on to a belief because it is valuable to them. I'm not so sure of that. Some people hold a belief simply because they were raised with it. If it does nothing for them, they are IMHO more likely to be convinced by a mild face-slap argument and some evidence of a contrary belief. The people who have a belief tied to their identity, or the the people who say "this changed my life" are not going to convert with Dawkins approach because he's trying to take something from them, or even attack their identity (quite rudely).