It is shown that it is possible to introduce determinism into quantum mechanics by tracing the probabilities in the Born rules back to pseudorandomness in the absolute phase constants of the wave functions. Each wave function is conceived to contain an individual phase factor $$\exp (\mathrm {i}\alpha )$$exp(iα). In an ensemble of systems, the phase constants $$\alpha $$α are taken to be pseudorandom numbers. A reduction process (collapse), independent of any measurement, is conceived to be a… Expand