[betty boop]

The only truly closed system is the universe itself.

Are you sure about that, D? How do you know that?

[Dimensio]

Are you sure about that, D? How do you know that?

I admit that it's an assumption based on the fact that there is no known source of matter/energy entering into/escaping from our universe, nor are there any really viable hypothesis on how such a thing could happen.

Do you have an idea for how such a thing could happen? Can you explain how my assupmtion relates to the fact that earth is not a closed system and that you were arguing based upon misconceptions?