**Note to Self**: Playing with Sargent-Stachurski QuantEcon http://quantecon.org: I have long been annoyed with the standard presentation of the Solow Growth Model because the state variable k—capital per effective worker—is not observable in the real world, while the capital-output ratio κ is. Moreover, the steady-state capital-output ratio has an easy to remember and intuitive description: it is the savings rate divided by the economy's steady-state investment requirements. Capital per effective worker has no such intuitive description. Plus the capital-output ratio exhibits exponential convergence to the steady-state. Capital per effective worker does not:

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#economicgrowth #notetoself
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