[js1138]

I believe Newton and Galileo did their best work before 1823. What is it about age that makes a idea obsolete? Come to think of it we are still using a Constitution written before 1823.

[neutrino]

I believe Newton and Galileo did their best work before 1823. What is it about age that makes a idea obsolete? Come to think of it we are still using a Constitution written before 1823.

Newton had some fine ideas - that Einstein corrected. And Einstein has some fine ideas - that were corrected in Quantum physics.

Age does not make an idea obsolete. A change in the underlying assumptions and conditions may. Economists are making predictions that are wildly incorrect, and by their own words they don't know why. I merely propose the the world has changed sufficiently to invalidate Ricardo.

As for the Constitution - keep in mind, it has changed through various amendments.