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If you are so sure the reader is going to be sure what happens, then you need to make the journey interesting. There are plenty of stories in which everyone knows what's going to happen and enjoys ...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/35702 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
If you are so sure the reader is going to be sure what happens, then you need to make the journey interesting. There are plenty of stories in which everyone knows what's going to happen and enjoys it anyways because the journey is interesting (superhero movies, romance, some mystery stories, etc.). You could lead the rider away from the truth that he will succeed. Maybe he gets rejected, hurts himself badly, or gets another job. I don't think this is the approach you want to take. The other approach is to make the journey more interesting. You can start by making the training operations interesting and engage the reader there. You can also use this time to build relationships between characters that will last throughout the novel. See _Ender's game_ for a good example of interesting training. One last idea is to use the time to do some worldbuilding and explain the galaxy via dialogue and discussion between character.