There is also some advantage to having a head of state and government whose direct electio rovides democratic legitimacy that can be seen as reflect ing the national will.Whatever divisions exist in the legislature, the executive can arguably act as a unifying force for the country. Fixed terms can also be an advantage since they provide a timeline for the development of policy and accomplish- ment of objectives that allows legislators and the executive to think in the long term rather than worrying the government will fall imminently, providing greater predictability and stability All of this, supporters a allows presidentialism to achieve effective governance while simultaneously maintaining accountability. Political scientist Juan Linz (1990), however, argued that presidentialism has many potential disadvantages. He saw the separation of powers as leading to what