you are reasonable and very Christian and this statement is very correct.
If you hold to the Nicene Creed, anything beyond that is a family discussion, not an inter-family argument.
Maybe the reason we all argue so much (as I see some in this thread) is that we are family. Families argue more with each other than they do with perfect strangers.
I like your word - discussions. I learn a lot form them. (Bookmarked the original site of the article, which launched this thread. Good resource on information.)