Atheist who grew up in Oklahoma here. The people in this thread who think that the correct tactic is to immediately jump to "Why is your religion better than Mayan creation myths?" are completely clueless. If you ever even met a creationist, you would know that that would just make them dig in their heels and "confirm" their low opinion of mainstream science.

The idea of tiptoeing around religious fundamentalism may bother you, but ultimately you have to decide if you want to be as "right" as possible or if you want to have a shot at convincing someone. And if you don't care about convincing the kind of person who can be a young earth creationist in 2014, then I don't know why you'd even pay attention to any of this.