At this shank end of a shabby year, Americans still can be thankful: They do not have the problem of nothing to grumble about. As we steel ourselves for Thanksgivingâ??s obligatory routs and revels â?? does anyone really like turkey? or Uncle Ralph, who keeps turning up, like a bad penny? â?? Americans are cudgeling their brains for reasons to feel gratitude. So, herewith a call for everyone to temper gloom with lucidity. Things could be worse. And they often have been while Americans nevertheless were giving thanks.