From the second law of thermodynamics…
If you regard the universe as a closed isolated system…
In a closed isolated system (a system which us not being disturbed from the outside) any spontaneous change must increase the entropy.
In a closed, isolated system the entropy seeks a maximum.
If you plot the entropy of a closed isolated system against some system variable any spontaneous change in the system must take the system to higher entropy.
If the system is not in equilibrium then but if the system is at equilibrium any spontaneous change in the system must leave the entropy unchanged, Equation dS > 0 is the origin of the somewhat arrogant statement that you may have heard,
“The entropy of the universe is increasing”
Buat orang teknik atau saintis, yang belajar tentang termodinamika, harusnya tau kalo kiamat itu emang beneran ada.