----------------- HES POSTING ----------------- On the occasion of the centenary of Jan Tinbergen's birth (1903), the Erasmus University Rotterdam (formerly Netherlands School of Economics) restored a circulatory tube machine capable of tracing the usual macro-economic flows. I do not recall that it could do Phillips Curve simulations, so it might be a different machine than the one mentioned by Robert Leeson. Peter Cornelisse (maybe the last Tinbergian in what has primarily become a centre-right institution) gave me a full demonstration when I visited him last summer. According to him, there are only two others in the world. Blueprints were, incidentally, lacking, which made the restoration difficult. Jesse Vorst ------------ FOOTER TO HES POSTING ------------ For information, send the message "info HES" to [log in to unmask]