My presentation was not a hit. I think that they didn't really care. That's actually one of the most disappoint aspects of teaching at the undergraduate level I've found. You can come up with exciting propositions and ideas, and most of them are just forced to be there and they don't care.
I did have two responses. First, one young woman wanted to know why Paul was so homophobic (I had them read Romans 1- I explained to her that Paul is not homophobic even if he thinks that homosexual practice is wrong. I then gave a long explanation of how ancient people thought about homosexuality and how it was invented as an idetity in the later 19th century).
The second young woman couldn't defeat my argument about the rationality of supernatural revelation, but said that it seemed too rational. She then said that she believed in Christianity because she has "faith" by which she means irrational belief that makes her feel good.
I think this shows that even the ones who have some Christian belief like the idea of the irrationality of faith because it gives them an out. In other words, if God gets a little too scary-like if he would start to judge me or something- then I can always have the power to put aside my irrational decision to believe in him, or more likely, irrational decide to believe in a God that I like better. A Christian theology with a robust natural theology and which claims that its claims of supernatural revelation are provable, does not allow that possibility. Therefore it's too frightening to contemplate.