It is safe to say that the soft global economy and currency gyrations will have some impact on world demand. However, predicting exactly how that happens and what the specific effect on overseas demand for U.S. grains and soybeans will be is sheer guesswork at this point.After USDA releases this month’s WASDE on 9 October with its latest production estimates for the 2015 U.S. corn and soybean crops, the futures market community will conclude that it has a pretty good handle on that production. Now that the 2014/15 carryout is fixed, total supplies of each will also be closely counted with only minor future variations likely.With supplies well in hand, analysts will turn to the other side of the supply/demand balance sheet. Admittedly, the d...