The heart of the utopian belief is that human needs can be satisfied if certain conditions are met. Simple dissatisfactions lead to the simple satisfactions. ‘Utopianism and political theory) looks at the complicated relationship between theories about utopias and political thinking. Some critics of utopianism, who equate utopia with the search for ‘perfect’, connect the problems of the 20th century (world wars, genocide, Communism, Islamism) with utopianism. On the other hand, supporters argue that utopianism has been fundamental to overcoming the worst excesses of the 20th century and is necessary for the continuance of civilization as people are always striving for things to improve (towards utopia).