" The second law of thermal dynamics:
Just in case you aren’t familiar with this law, it’s used to explain how, given enough time, anything that exists within a closed system is slowly moving towards disorder. If you’re in a closed system, which we are, then this law states that things will either stay the same or get worse. It’s not a very optimistic law, to say the least. "

― Charlie McDonnell , Fun Science: A Guide to Life, the Universe and Why Science Is So Awesome