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Quantum potential based theories present important insights into the quantum domain behavior of classically chaotic systems. The Review on page 1747 by Munmun Khatua, Debdutta Chakraborty, and Pratim Kumar Chattaraj discusses some representative examples of quantum signature of classical chaos through the study of quantum domain behavior of classical nonintegrable systems using quantum fluid dynamics, the quantum theory of motion and the quantum fluid density functional theory, and also the reactivity dynamics of various systems in free and confined environments. The solution of the relevant generalized non-linear Schrödinger equation provides the essential time-dependent density and current density and dynamical variants of different electronic structure principles become evident.