Goldman’s Jan Hatzius and Merrill’s David Rosenberg agree on numbers but not on tone

Two economists’ missives to clients just arrived in my e-mail inbox, and they make for an interesting pair.

Goldman Sachs chief U.S. economist Jan Hatzius, in a note titled “More Signs of Stabilization,” writes:

A sharp improvement from the current pace is very likely, and a pickup from -7% in Q1 to -1% in H2 looks about equally likely to me as a pickup to +3% — i.e., +1% seems like a reasonable target.  On the plus side, my experience over the years is that inventory cycles have a habit of surprising on the upside.  On the minus side, we think capex still has a long ways to fall (especially in nonresidential construction), the upward pressure on the saving rate is likely to cap the consumer recovery, and the risk of additional financial “accidents” is likely to remain with us for quite a while.

Soon-to-depart Merrill Lynch chief North American economist David Rosenberg, in a note with the more cryptic title of “Second Thoughts on the Second Derivative,” writes:

Our view of the situation is that what is getting investors excited right now is the improvement in the second derivative in a variety of economic data points that were released in March, showing basically that the economy is no longer falling off a cliff. … While it now looks very clear that we have worked through the post-Lehman collapse that caused credit to freeze up, consumers to go comatose and businesses to dramatically pare their inventories, the economy is now transitioning back to its pre-Lehman trajectory

What was the economy’s “pre-Lehman trajectory”? -0.2% GDP growth in the fourth quarter of 2007, 0.9% in Q1 2008, 2.8% in Q2 and -0.5% in Q3. In other words, right in the range that Hatzius is projecting for the second half of this year.

Rosenberg presents his call as a skeptical reality check on Wall Street’s recent optimism. Hatzius has for the past couple of weeks been presenting his call as a modestly optimistic pushback to the extreme pessimism he hears from many clients. But their forecasts are almost exactly the same.

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  • curmudgeon57

    As an economics columnist, I would assume that you know that the second derivative represents an inflection point (to be fair, many who claim to have some knowledge of economics don’t know their calculus). Whether it reprsents a turning point or a continuation downward is not at all clear in real time. This “prediction” sounds like a cop-out.

  • bryanfromhouston

    Since we know that inflection points generated by second derivatives give either an indication of a covex function transitioning to a concave function, or vice-versa, the recognition of some change at a second derivative is merely elementary calculus…but yet without some correlation to real world events, it gives little information. Further, the analysis of Q1 – Q4 tell us very little about how the world-wide destruction of $40 Trillion in wealth will wash out in the economy over the long haul. Those losses will have to be flushed out of the system somewhere. Happy talk will not accomplish this burden.

  • curmudgeon57

    @bryan: I think what you said is agreeing with me, although my MS in math is not entirely sure.

  • bryanfromhouston

    Curmudgeon,
    -
    All I am saying in laymans terms is that what Hatzius and Rosenburg are stating is that the sky appears blue. But that tells us nothing beyond that fact. If it will rain, snow or cool off tomorrow require more indepth observation, analysis and correlation where appropriate. Such simple pronouncements impart little value to the discussion. They sound important and technical but mean nothing. You know this to be true by the manner in which their observations both arise at the same end from different vantage points.

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