On 2nd derivatives, green shoots and inflection points

We don't do investment advice on this blog. But all the hopeful talk about green shoots has also provoked this nice�Buiter comment. To turn bullish on the news of an inflection point after what may easily have been the world's sharpest inventory rundown in human history requires a foolhardy degree of optimism, given that the economic growth trajectory is no sinus curve - another inflection point may easily occur before we're actually coming across a turning point.�