For most movies - especially fantasy movies - we put logic and reasoning on hold and forget that magic doesn't exist and that Bruce Willis probably isn't bulletproof. That's suspension of disbelief.
But have you ever stopped suspending your disbelief and thought - if only this happened, the whole movie would be completely different? I think we all have at some point, haven't we?
Will you suspend your suspension with me now and watch a clever little video about the Lord of the Rings which will leave you asking ... "Yeah - why didn't it happen that way?"