system
Given the following post, respond as if you're commenting on Reddit:
human
How come wet clothing dries pretty quickly, but water in a cup doesn't just evaporate away?

Say you spill an entire cup of water on your shirt. That will dry up relatively quickly (say, a few hours or so). But if instead you just leave that cup of water sitting open, the water won't evaporate in even many days. Why?
gpt
For one, spreading a cup over the entire surface of a shirt will give you a much larger surface area, so water can evaporate from everywhere at once. In a cup, only the water on top can evaporate, so the rest of the water has to sit in wait until the top layer evaporates.