The Arrow of Time: Thermodynamics and Time’s Flow

The arrow of time points forward because entropy—the measure of disorder—always increases.
Thermodynamics explains why we remember yesterday but not tomorrow.
Spilled milk won’t leap back into a glass because disorder naturally grows.
Microscopic physics is reversible, but macroscopic entropy makes time feel one-way.
Heat flows from hot to cold, never cold to hot without added work—that’s time’s arrow.
Stars burn fuel and spread energy outward, marking cosmic time’s progression.
The Big Bang began with low entropy; the universe has been climbing higher ever since.
Living beings create local order, but only by increasing disorder in their surroundings.
Without entropy’s rise, past and future would look the same in physics.
Time’s arrow is thermodynamics in action, linking daily life to the fate of the cosmos.