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Wellington, New Zealand

Moniac Machine

A strange machine made to evaluate the world economy using water and lots of tubes. 

In 1949, Keynsian economist Bill Phillips (father of the Phillips curve) built the financephalograph, also known as the “Moniac.” Using water to represent money, the massive hydraulic model of the British economy was, for a time, the most complex, and wettest, economics computer in the world.

Besides the one in the New Zealand Institute of Economic Research, Moniac machines can also be seen at the Istanbul University, Cambridge University and London’s Science Museum.

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