Futures markets seem to be taking a schizophrenic view of the supply/demand situation facing U.S. corn and wheat. Traders are well aware that the worst drought in 50 years has sharply reduced corn production, and they are well aware that U.S. wheat supplies are being drawn down in part because wheat is being used in livestock feed as a substitute for the missing corn. And of course, traders are well aware that world supplies of both corn and wheat are in decline. Yet, some traders argue that corn and wheat futures markets are bearish because exports of U.S. corn and wheat have slowed to a trickle.It may appear somewhat ingenuous to expect exports to be booming during periods of low and/or tightening supplies, but then traders and markets...