Are statements within a story true until contradicted?

Here is a good topic that is sure to rouse discussion! Are statements within a story true until contradicted? Are they true even if there is no supporting evidence to back up their claim?

For example:

Person 1: If he perfects the technique he definitely ain't gonna lose!

^ But we don't see the end result of the person whose trying to perfect the technique, he never had the opportunity to prove himself. Does this automatically mean his technique was good enough by the authors admission? Or is it simply an opinion?

Thoughts?

Let's block ads! (Why?)

Are statements within a story true until contradicted?