Why is free choice one of the central signs of what makes a human being unique?

This source-based Hagut Yosef essay explores the question: Why is free choice one of the central signs of what makes a human being unique? The canonical Hebrew article develops the theme through Torah sources and reflection on human life. This localized discovery layer preserves the source’s meaning and identity and does not add new halakhic, historical, psychological, medical, legal, political, scientific, or empirical claims beyond the Hebrew source.