The four sinks, which are regions of the Earth within which carbon
behaves in a systematic manner, are the atmosphere, terrestrial biosphere (usually including freshwater systems), oceans, and sediments (including fossil fuels).
The monetary policy debate over whether rule - like behavior is preferable to pure discretion dates back at least to Henry Simons
in 1936.1 More recently,
in their Nobel Prize - winning work, Finn Kydland and Ed Prescott demonstrated that a credible commitment by policymakers to
behave in a
systematic rule - like
manner leads to better outcomes than discretion.2 Since then, numerous papers using a variety of models have investigated the benefits of rule - like behavior
in monetary policy and found that there are indeed significant benefits.