Frankly, Gumbles, a christian doesn't try to convert anyone, they believe that by God's grace they are called. This is where the dubs (and others) have it wrong where they attempt by using sales techniques to change people's minds. Remember the "Reasoning" book? Remember the sales Service Meeting? They've overlooked what God does and the heart.
Nevertheless I find this thread part of the patronising that goes on by those who believe that a believer is somehow inferior to them. So it's always been. They claim to believe in their unbelief.
Ozzie
Blessed are the bewildered - for they won't notice!