47ed18c3_Systems_of_Democracy__Parliamentary_Democracy
[Direct Democracy] The process of making laws is rather slow, which may be a hadicap with more technically oriented laws (regulating questions of broad public interest but addressing a small number of professionals). Laws concerning everybody's everyday's actions, however, may get more attention and acceptance by the public and therefore be more effective due to the intense public debate. [Presidential Democracy] A strong president may act immediately - but there is a certain risk that he rushes to conclusions he may hardly be willing to withdraw from even if they prove to be unwise from a later point of view. [Parliamentary Democracy] 
If there are many small parties in a country, the close dependance of the government on a parliamentary majority may undermine the stability of the government.
Systems of Democracy
Parliamentary Democracy