Final answer:
No, we cannot go back in time by reversing entropy.
Step-by-step explanation:
No, we cannot go back in time by reversing entropy. According to the second law of thermodynamics, entropy (a measure of disorder) will always increase or remain constant in a closed system. This means that natural processes, such as heat transfer, tend to move from a state of higher energy to lower energy, and cannot spontaneously reverse. Technological advancements and quantum physics may bring new discoveries, but currently, there is no evidence to suggest that we can defy the second law of thermodynamics and reverse entropy to go back in time.