Library.

“Core properties invoked in physicalist or materialist metaphysics, including mass, time, momentum, and color, cannot be ontologically reduced to an underlying substrate that would count as traditionally physical under Newtonian or pre-quantum-mechanical standards.”

The evidence does not support the sweeping assertion of ontological irreducibility. Newtonian physics already treated mass, absolute time, and momentum as physical fundamentals, while classical accounts often explained color through primary qualities. Modern relativity, quantum theory, and unresolved color debates complicate those historical models, but they do not establish that reduction to every traditionally physical substrate is impossible.

“Bohmian mechanics is widely accepted within the physics community as a valid interpretation of quantum mechanics.”

Bohmian mechanics is a recognized and technically serious interpretation, but it is not widely accepted across physics. Authoritative references describe it as historically non-mainstream, and cited polling reports only about 2% preference, far below Copenhagen. Recognition as a legitimate research program does not establish broad community acceptance.