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Physics Slayer

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- TL;DR Summary
- Does quantum mechanics imply a deterministic or non deterministic model of the universe?

The entire universe has a single very complicated wave function ##\psi##, and if we plug this into the schrödinger equation will that mean we live in a deterministic universe? (whatever happens and will happen was already predetermined at the time of the big bang. the initial conditions of the universe, i.e. ##\psi(t=0)## was set at this time)As the schrödinger equation will tell us how the wave function will evolve, will that mean that a theoretical creature like Laplace's demon could see the future and the past?

I have heard people before Quantum Mechanics believed that everything was deterministic and that we have no free will, if we knew the forces acting on every particle we could theoretically construct the the future and peer into the past, but once we got to know about the fundamentally random collapse of the wave function, this model of a deterministic universe could not hold anymore?

I am not sure if I am allowed to ask about free will(on a science forum, it's more philosophy?).

I have heard people before Quantum Mechanics believed that everything was deterministic and that we have no free will, if we knew the forces acting on every particle we could theoretically construct the the future and peer into the past, but once we got to know about the fundamentally random collapse of the wave function, this model of a deterministic universe could not hold anymore?

I am not sure if I am allowed to ask about free will(on a science forum, it's more philosophy?).