Christopher Sims is one of the leaders in time-series econometrics and empirical macroeconomics and is well known for introducing the VAR approach to econometrics and macroeconomic modelling. Sims' main contribution to empirical macroeconomics was to show how macro-econometric modeling should be...

The first two chapters of Trygve Haavelmo’s Probability Approach provide a very rich epistemological framework for understanding what is involved in finding laws outside the laboratory. Even though these laws will be inexact, a framework was developed to specify for which conditions laws could...

This paper is an introduction to a volume commemorating the life and work of Mark Blaug, a famous historian of economics.