Touching the Void- fate

In touching the void fate is used to show how the climber Joe had a voice in his head telling him that he needed to get down off the mountain. The voice in his head is telling him to go further into the cravase as there may be a slim chance that there might be a way out down there. This is when you see the voice in his head start to show. Eventually when he does get out and he feels relived at first the relishes he has along way still to go. He then starts to keep saying in his head that he has to get to a curtain point in 20 minutes and if he did it he would be very happy with himself but then if he did it in 22 he would be really pissed off at him self. But if this was fate then he would have always got down and would never have been in dang our. This could show the voice in his head is fate.