It is a pretty common well known fact that the entropy of a system is a state function ie. it doesn't depend upon the path taken by the process as long as the initial and final states are the same.
I have a doubt whether we can say the same for surroundings or even the universe.
My first thought is that the entropy of the universe would be continuously increasing or at best it would be constant. It can never decrease. Thus the universe can never be at a state where it was before. The talk of state function seems strange here.
Still I am not very sure and I have no idea whether entropy of surroundings is a state function or not.
Any help would be appreciated. Thanks