I kind of share the authors dislike for the concept of entropy, at an instinctual level. But the fact remains that we know that energy is conserved, but there i

I kind of share the authors dislike for the concept of entropy, at an instinctual level. But the fact remains that we know that energy is conserved, but there is still something happening as time progresses, where the world is changing from one state into another. Calling this difference "entropy" seems like the only solution, even if the definition for entropy is hard to really get comfortable with. (Though I appreciate it can be made very rigorous for specific physical calculations)