People consciousness and mass mobilization is required for forming a revolution.
Che Guevara could not achieve his goal in Bolivia because he only intended to design a successful guerrilla warfare. In contrast, defeating the Hitler's Beer Hall Putsch, Castro's Moncada Barracks and 1963 demonstration in Iran, though were not engineered but played leading roles in the revolutions. For starting a revolution, one should capture people's hearts.
A magnificent defeat like the sample of Iranian Green Movement or a beautiful death such as the moment of Che’s execution, which motivate people awaking, are just prerequisite of a revolution. Indeed, the elements of time and nature are the greatest architects in politics.
Today's Iran is ready for a revolution. But it is only an option as long as the game is not out of control. The system must break it to make the revolution a necessity, not a choice.