So many things in our lives happen in one direction, but never in reverse — eg wine-glasses shatter, but never unshatter. However, at the level of atoms and molecules, such processes are reversible. But when we get to bigger collections of atoms, a kind of one-way street emerges — a macroscopic irreversibility arises from microscopically reversible parts. Things spontaneously happen in the direction of increasing entropy, never in the opposite direction, because there are more ways to spread energy around, and fewer ways to keep energy confined. Increasing entropy is highly likely, decreasing it is basically impossible. It's all about probability !!!
one plus one
Shared publicly•View activity