Haavelmo’s visit to Aarhus in 1938-39 did not have any influence on his famous
econometric contributions. But if one considers Haavelmo’s post-1945 research in the balanced budget multiplier and the investment theory, there seem to be indications of much more inspiration from the discussions that went on at Aarhus University. At least, this is the simplest explanation of a couple of ‘independent’ publications of closely parallel results.