very good question, you caught me in fraganti there...So when a tree falls down in the woods and no-one's there to hear it, it doesn't actually fall down?
If you were in the woods trying to measure the tree when you find it perhaps it would be fallen, but if anyone wasn't there it would be okay. That's the solution, I'll give it to yah. Certainly I am not about to go measure.
Anyways, gaming, like any other human activity is subject to the rules contained in the universe.
I sometimes wish I could jump back -or even ahead- a few billion years to when the galaxy was very visible. I imagine that it'd the most spectacular sight.