Four-dimensionalism claims that the universe is basically one huge space-time worm and that everything exists at once (however you want to say that since "internal time" is then just another coordinate in this worm and I'm talking about the look from the outside).
OTOH, all processes in the universe seem to follow an energy economic principle (second law of thermodynamics), that is, everything tries to reach a state of lowest energy.
Now I'm wondering if that isn't enough to refute the idea of 4D-ism: For it to be the correct theory about space-time, you'd need a lot more matter (at least) because every point in time must be materialized as a "solid" state. That means for everything can happen within what we perceive as "one second", one state must be encoded.
Quantum processes happen at attoseconds (10^-18s), so you need at least 10^18 states just to encode one second of the 4D worm.
So my argument is that, just to prove the theory, you're "wasting" insane amounts of whatever the universe is made of.
Is that correct or am I missing something?
NOTE: English is not my mother language, so I may have use the wrong terms but I hope you get the idea.