There are at least two stages of No Going Back. The first is entry into the First Threshold. In The Matrix (1999), Neo is given the choice between the red and blue pills. In Romancing the Stone (1984), Joan crosses a bridge which falls away; when Jack crosses, the vine falls away. In Bonnie and Clyde (1967), No Going Back is expressed by the killing of the guard as he jumps the car. They're wanted for murder now.
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Go to http://www.clickok.co.uk/index4.html for more info on the 188+ stage Hero's Journey....
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