Driver: The mechanism by which the plot is moved forward.
Some stories are driven by actions. Others are forced along by decisions. All stories have some degree of both. This question determines which one “triggers” the other, but does not determine the ratio between the two.
If actions that occur in your story determine the types of decisions that need to be made, your story is driven by Action. If decisions or deliberations that happen in your story precipitate the actions that follow, your story is driven by Decision.
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