edit: if one is dealing with a closed system only.Originally Posted by Quantum Quack
Time dillation is a time [ energy ] compensation due to attempting to exceed the inherant 'c' of matter/mass. [ nothing can go faster than 'c' so time is compensated when an object does get pushed beyond it's inherant rate of 'c']
If the system is open then this, time dilation, would not be happening or if so it would be inconsistant. So IMO the existance of "consistant" time dilation proves that the universe is a fully closed system.
Thus the laws of thermodynamics are essentially upheld.