Everything and Nothing

Can we put a limit on everything. I think we can. If we accept the notion that the universe is expanding then also I think it would be reasonable to assume that everything is also expanding. If everything is expanding then it must be expanding to fill a space that doesn't contain anything.

We can say this because anything would have to be a subset of everything. Therefor everything must be expanding inside of nothing. Therefor everything must be a subset of nothing.

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