I know that we don't know that Dec. 25th was the actual birthday of Jesus. However, we can exchange gifts in remembrance of the greatest gift to us, Jesus. Halloween is a pagan custom. No doubt about that. We had treats for those who came to our door, but we also had a gospel tract to go along with it.
Thanksgiving still remains a day to give thanks for the good or bad of the past year.
I'm not sure what Skot Diablo was trying to prove. Real Christians know what the season is about. This letter is written to two often distinct communities in the Warsaw area. First, the biomedical or biotechnical community, which is very influential here, and the spiritual community, which is also well known. Except in individual cases, there seems to be very little interfacing between the two, to the detriment of both, of course.