According to our current understanding of the laws of thermodynamics, entropy is a fundamental property of systems and tends to increase in closed systems over time. The second law of thermodynamics states that the total entropy of an isolated system always increases or remains constant.
In practical terms, this means that it is highly unlikely for humans to reverse entropy on a global scale. However, it's important to note that the concept of entropy applies to closed systems, and Earth is not a completely closed system. It receives energy from the Sun, which sustains various processes and allows for the existence of life.
While it is possible to decrease entropy in localized systems or create more ordered states through energy input and active maintenance, this requires the expenditure of energy and resources. For example, humans can organize a messy room or assemble intricate structures, but these processes still result in an overall increase in entropy when considering the entire system, including the energy and waste involved.
So, while we can manipulate and temporarily decrease entropy in specific areas or systems, reversing entropy on a global scale or halting the eventual increase of entropy in the universe as a whole is highly unlikely based on our current scientific understanding.