Does a revolution need a strong central figure in order to succeed?

Egypt's government continues to hold on to power after two weeks of sometimes violent protests. History offers a guide to what makes a revolution more likely to succeed — or fail. Iran's popular uprising, for example, succeeded in 1979, but China crushed the 1989 uprising in Tiananmen Square.

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.