The Reasoning is an evaluation process and an operation that is performed in relation to ongoing discussions, a topic that is written and prepared, explains events, processes, procedures, mechanisms, etc. Aptitude is capability. For example, if someone has the aptitude for mathematics, they can more easily reason about processes. Aptitude is a certain skill, such as deep thinking, logical thinking, learning technical subjects, teaching, educating people, etc. It is clear in someone's actions, work, and general behavior.