He makes a good point that just because GDP begins to rise it doesn't mean that we should stop worrying, but I don't really like his definition of when we say the recession is over. He wants it to be:<p>"when GDP returns to (or near) its trend line"<p>But I think we'd be better served by waiting till the economy is growing at its regular rate (according to Posner, about 3% annualized). That is when we know that the economy is growing appropriately.<p>His other comments on the history of the words "depression" and "recession" are very interesting.