Martin Wagner created just such a list to help a recent evangelical visitor to the blog for Atheist Experience:
- Be aware that most atheists have come from religious upbringings.
- Be aware of logical fallacies so that you do not make them
- Don't mock guys like Charles Darwin or Richard Dawkins if you've never read a word they've written.
- Don't make foolish assertions that your religious belief is on the same footing as science.
- We are aware that to Christians, atheists can often sound brusque, condescending, and downright pissy.
- Be aware that the minute you fall back on "You just have to have faith," you've lost.
There is a more detailed explanation for each point which you can read if you follow the above link. I've tried to create similar advice, based on my own experiences and emails:
- How to Talk to, Debate Theists: Ways Atheists Can Avoid Common Errors
- How to Talk to, Debate Atheists: Ways Religious Theists can Avoid Common Errors
- Conversation Killers for Atheists: How Religious Theists Can Hurt Their Cause
What sorts of problems do you consistently encounter and would like to included in such lists? How do you explain and deal with them when they do occur?