I have a feeling that most of the people reading this site already understand everything in this article, but it's a useful synopsis of common issues faced when trying to have a reasonable discussion with laypeople, and might be good to point them to if necessary.
http://thoughtcatalog.com/2011/how-to-have-a-rational-discussion/
I also want to mention how much I wish someone had shown me something like this as a teenager- I was very prone to lecture others against their will- as it might have saved me a lot of grief. I'm curious to see if these tendencies might have been common among members of this community growing up, so please comment to tell me if so (actually, please tell me even if not-no reason to encourage my own confirmation bias)!
Presumably the Judeochristian god, if it exists, is perfectly capable of changing my mind on this topic. I mean, that can't be any more difficult than turning a sea into blood or slaying all the first-born children of Egypt. I'm not sure I can properly be said to "envision" it, but that seems close enough for purposes of a conversation like that.
Okay, I guess that does fit the literal wording given. I was thinking that directly changing my mind wouldn't really count as "evidence".
This seems sort of like a general-purpose bypass for that step, though; if something like God exists, it could presumably reach into my brain and change any of my beliefs. It doesn't seem like this is enough to support a rational discussion.