Would it still be a "truth question" when many different denominations arrive at the same conclusion? Is it safe to conclude something as a "generic Christian opinion", or should I always explicitly write the denomination/religious affiliation of the writer who expresses the opinion, assuming that there may be at least one denomination somewhere in the world that disagrees?
Recently, I answered this question. It looks like a "truth question" to me, because it is not specifying the denomination; yet, I found out three sources (Calvary Chapel member, Fundamentalists, and Catholic) that seem to say the same thing. I don't know, but I think this should be one exception to the hard-and-fast rule.
On the other hand, I think I only covered Western Christianity, not Eastern. So, my answer may be biased.