In a strange way, the approach of Halloween turns our attention to the current state of grain and soy markets here in the U.S. Twisting the spirit of "Trick OR Treat" somewhat, it seems to us that markets are both providing treats AND playing tricks at the same time.Tomorrow (31 October) is Halloween, the eve before All Saints Day on the Christian calendar. Celebrating the night before the day of Saints may have its roots in early Christian history, but it has turned into something far different. Halloween has become a celebration of all things scary. It is also an opportunity for children to dress up in weird costumes, ring doorbells and threaten to play tricks on whoever answers unless they are rewarded with treats. "Trick or Treat" has b...