If you understand the reason behind an action or event, it becomes easier to identify the person responsible. Knowing the motivation provides clarity and direction in solving mysteries or uncovering truths. This insight helps investigators or readers connect the dots and focus on suspects or causes more effectively.
In James Patterson's book "16th Seduction," this idea emphasizes the importance of understanding motives to uncover the truth. When the "why" is clear, it guides the search for the "who," making the process of solving cases or mysteries more straightforward and logical.