While some people try and superficially use the language of quantum physics when talking about sociology, psychology, etc, I think it's all bunk. QM specifically applies to physics at very tiny (sub-atomic) scales, and at larger (macro) scales even in pure physics the quantum characteristics disappear. Same for relativistic physics, which only matters at very large scales of time and space. E.g., at the human scale of masses and motion Newtonian physics is accurate and useful.

QM is apparent at atomic and molecular scales. One much larger example is a Bose Einstein condensate in which a single quantum state can extend over thousands of atoms.

Quantum mechanics works at all scales and speeds, and relativity works at all but the smallest scales. It's the *difference* between the older, simpler newtonian physics and modern physics that's only apparent in special situations.