That's a very far limit, though. It will not have practical consequences for a long time. Also, if you don't squeeze as much as you can into a small space, you

That's a very far limit, though. It will not have practical consequences for a long time. Also, if you don't squeeze as much as you can into a small space, you can scale sublinearly ad infinitum (in practical terms, which don't include heat death of the universe).