ABSTRACT
On Wednesday, 5 April 1933 at 17.45 – and one may presume it was precisely at that time – Ragnar Frisch gave a lecture in the Amphithéâtre Darboux of the Institut Henri Poincaré, 11, Rue Pierre Curie, in Paris. Its title was: ‘Conclusion: The meaning of the social and mechanical laws. Invariance and rigidity. Observations on a philosophy of chaos’. It was the final lecture in a series of eight, dealing with mathematical economics and advanced topics of econometrics – indeed, the first lectures in the history of economics using the concept of econometrics.
