Comment by digbybk

Maybe someone can help me wrap my head around this. Let's say you have a box of gas in a low entropy state: all the particles are on one side of the box. A moment later, the particles will have spread to the other side of the box, so the entropy is lower. But to say "a moment later", we're assuming a quantity called time. I'm confused how you can see this in reverse: "because the particles spread to the other side of the box, a moment passes".