GIRO JONBAR in science fiction point where the story changes. For example, at a time of the future the extermination of the human species is unleashed by the effects of nuclear war between Russia and the United States, which has mutated the human genome. The solution is to go back in time and kill Krushev or Kennedy, who in the first version provoke war. In the time machine someone comes from the future to the Jonbar turn and makes Lee Harvey Oswald know the KGB agents and get him killed. History changes and the first future is discarded. SEE JONBAR POINT
