A critique of the classical limit problem of quantum mechanics

The complex quantum-classical relationship is reviewed and the inadequacy of quantum mechanical wavefunction description for the centre of mass motion of a macroscopic system is discussed. The emergence of manifest classical reality in this case is analyzed and we interpret the unphysical infinitely rapid oscillations of the wavefunction near the classical regime observed in our earlier studies as the breakdown of wavefunction description for the normal macroscopic mass domain above 10(-15) g. It is contended that, production of quantum interference with large macromolecules like viruses (m similar to 10(-12) g), as proposed by some authors, is impossible. Another testable prediction asserts that particle tracks, whenever observed, will obey classical law and offers an interesting experimental verification.