So, here’s an intriguing quandary for you. I have a colleague, a full professor who has taught Psychology of Religion for about 30 years. He knows more about what makes religious people tick than just about anyone else in the world (he has, quite literally, written THE BOOK on it). I got to talking with him at a conference lately and my Mormon past came up. We talked about it at length and he was genuinely very interested (having never talked to a Mormon apostate). He emailed a few days ago to let me know that two Mormon missionaries had stopped by. He told them that he was very interested in talking with them, but he was busy at the moment and wanted them to come back in a couple of weeks. They agree to do so. This colleague is an agnostic atheist and is very unlikely (let’s say there is a 99.9999% chance) to convert to Mormonism. He isn’t interested in converting the missionaries to atheism, just in understanding their experiences and maybe helping them to understand the psychology of religion a bit better. He didn’t ask me for advice on how to convert missionaries but rather on how to approach them so he doesn’t offend them. Suggestions?