Circular fl ows
of money through the UK economy (household and government expenditures,
business investments, export revenues, losses due to imports, all tweaked via
policy measures aimed at controlling unemployment and stimulating growth,
e.g., through setting tax rates or issuing new currency) were physically emAnalog
27
bodied in tanks and streams of water of various colors, their levels charted by
felt- tipped pens as the system attempted to restore equilibrium following economic
shocks and corrections.