No, Krakuer does not cite any evidence regarding his analysis about alex relationship with his father.
He believe that alex just got stuck in the middle of conflict between McCandless and the father. But, he is just basing the assumption on the relationship between McCandless and the father without knowing for sure how alex behave to the conflict.
All the terms and the phrases in a given decoding task should always go with the precision of learning pattern so that everything within the task should synchronize to enhance the comprehension.
Laws in day to day may refer to a bill that has been passed in your country creating a law. A law within is Science is usually a fact that remains consistent and doesn’t change (like Newtons Laws). Scientific laws of course are tested to see if they remain accurate consistently before becoming law but they aren’t simply voted in/passes like laws in the judicial system.