Lillian, if we are unable to contact a particular author, then there will be a gap for that topic in the book. So I will put out a call for Gold and Platinum members to submit articles (same size as Challenge entries) on that specific topic.
When I said a special Challenge, I didn't mean a literal Challenge.
But this open invitation would be a nice way to open the door to some of our newer Gold and Platinum members.
I don't anticipate a huge number of vacancies, but there may be one or two in every book.