Are all particles in universe quantum entangled?

[Rishabh singh]

If we look at the starting of the universe during big bang as a system.
That system containing all the particles and energy must have a total spin.
And therefore as it expanded,the particles must be quantum entangled as they were in same system of definite spin.
Hence,when we measure any particle in the universe then it must affect all others in the universe and all the wave functions of particles must collapse.
But this doesn't happen.Why?

please clear any misconceptions.

 

[Demystifier]

A system can have a definite spin even if its subsystems are not mutually entangled. Furthermore, even if they are entangled, the collapse of one subsystem (due to the measurement of the other) is not something that is seen as a sudden dramatic change.

 

[Rishabh singh]

A system can have a definite spin even if its subsystems are not mutually entangled. Furthermore, even if they are entangled, the collapse of one subsystem (due to the measurement of the other) is not something that is seen as a sudden dramatic change.

Thank you very much.