What changes in physics if consciousness is primary?

Modern physics faces several conceptual problems: the nature of quantum collapse, the arrow of time and the growth of complexity, the cosmological constant problem, the origin of dark matter and dark energy, the hierarchy of fermion masses, and the weakness of gravity relative to other interactions. We propose a thought experiment. Assuming that a fundamental field Psi (with properties of internal distinction, polarization coupling coefficient, and its own quantum) exists as primary reality, while matter is its secondary manifestation — what changes in our physical description? We do not offer a complete theory. Instead, we sketch how each of the listed problems appears in a different light, and we identify experimentally testable consequences. The aim is to show that taking consciousness (understood as a field, not as human introspection) out of the "background" and treating it as a legitimate physical factor may be a fruitful intellectual move, not a retreat into metaphysics.