等待果陀? – Soybean Farmer Edition

(Translation: “Waiting for Godot”) Many observers have noted that the Chinese must eventually come to the US for some of their soybean needs, as the supply of Argentine and Brazilian soybeans are depleted and American soybeans are harvested. Current futures for November 2018 do not indicate a price recovery to pre-Trump tariff war levels, even if they do come. As of today:

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A Time Series Approach to Estimating Excess Mortality Rates in Puerto Rico, Post-Maria

One of the aspects of previous formal studies of excess deaths in Puerto Rico in the aftermath of Hurricane Maria is that the population decline in the years preceding the hurricane strike, while acknowledged, is not accounted for (Santos-Lozada and Howard, 2017, Rivera and Rolke, 2018, Kishore et al., 2018, Santos-Lozada and Howard, 2018). This factor is potentially important because the “normal” number of deaths per month is a function of population size. Ignoring that fact, when taking an average over several years to infer the normal rate will bias up the estimated normal rate and bias down the implied number of excess fatalities.

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Predictions With and Without Confidence Intervals: Puerto Rico Post-Maria

Compare this assessment (5/31/2018):

Thus, the data suggests that the hurricane accelerated the deaths of ill and dying people, rather than killing them outright. I would expect the excess deaths at a year horizon (through, say, Oct. 1, 2018) to total perhaps 200-400. Still a notable number, but certainly not 4,600.

With a contemporaneous prediction:

From the survey data, we estimated a mortality rate of 14.3 deaths (95% confidence interval [CI], 9.8 to 18.9) per 1000 persons from September 20 through December 31, 2017. This rate yielded a total of 4645 excess deaths during this period (95% CI, 793 to 8498), equivalent to a 62% increase in the mortality rate as compared with the same period in 2016.

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When Storage Does Not Save One from Low Commodity Prices

When prices are low for a storable commodity, agents (farmers or intermediaries) can wait for higher prices to sell. Of course, there is a carrying cost to storage for many commodities, like soybeans (deterioration of stock, direct storage costs, opportunity cost of capital tied up in commodity). Hence, while storage can mitigate losses, it does not necessarily eliminate economic losses that arise from persistent tariffs.

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