All market analysis should probably be put on hold until sometime Saturday night after the tweets start to flow from Argentina following the serving of dessert to the U.S. and Chinese presidents. Those tweets will likely set the tone for virtually every market for some time. Despite all the opinions expressed by the many talking heads in the media, the simple truth is no one really knows until then what might happen either at the G-20 summit in general or at the dinner meeting between Presidents Trump and Xi. There does seem to be, though, at least a ray of optimism starting to appear far on the horizon, and far might be the operative word. It is almost impossible to believe Sunday morning will bring news of a trade agreement. The most opt...