Nicole Bauer did a better job paraphrasing than I can, so I'll just quote her:

> [Goldstone] notes that a revolution requires lack of support from or alienation of elites, a crisis such as a fiscal strain, mass mobilization and popular anger against perceived injustices, an ideology of resistance, and favorable international relations. Most important, Goldstone debunks the common misconception that revolutions spring from an excess of injustice and poverty leading to frustration and eventual resistance. Poverty and frustration are not enough to ignite a revolution as countless examples, such as the Irish Potato Famine, have shown. What is needed is widespread belief that change is both desirable and possible, as well as a convergence of the factors mentioned above.