Equally important was an internal crisis of self- Rational expectations theorists, led by Chicago's future Nobelist Robert Lucas, challenged the whole idea that governments could do anything to mitigate macroeconomic instability.
Robert Lucas was a rational expectations theorist. 
mnli hypothesis: Robert Lucas was a rational expectations theorist.  premise: Equally important was an internal crisis of self- Rational expectations theorists, led by Chicago's future Nobelist Robert Lucas, challenged the whole idea that governments could do anything to mitigate macroeconomic instability.