After the 50s, the decline in fluid intelligence becomes the dominant force and our ability to make sophisticated decisions, for most people, declines.

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With our open borders, low tariffs, strong protections for intellectual property, low energy costs, integrated supply chains, and, most importantly, our skilled work force, our nations are working cooperatively to bring jobs back from remote shores, which is one reason why, for the first time in a decade, U.S. manufacturing job growth is again on the rise.

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Few leaders in our complex world can do all that by force of charisma and even fewer are going to be right most of the time.

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"Now we were able to restore most of the oil fields and they are ready to produce but we need our work force to come back, " said Mr. Ghanem.

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