According to the second law of thermodynamics, the total entropy of an isolated system tends to increase over time. This law is a fundamental principle of physics and is considered one of the most well-established principles in the field.
Entropy can be loosely understood as a measure of the disorder or randomness in a system. The second law states that in any natural process, the total entropy of an isolated system will either remain constant or increase, but it will never decrease spontaneously.
While it is theoretically possible to decrease the entropy of a specific part of a system, such as a localized area or subsystem, the total entropy of the entire system, including its surroundings, must either remain constant or increase. This means that any decrease in entropy in one part of the system must be accompanied by an equal or greater increase in entropy elsewhere.
There may be processes or techniques that can temporarily reduce entropy in a specific system, but such reductions would typically involve an input of external energy or work, which would result in an increase in entropy in another part of the system or its surroundings. Ultimately, the total entropy of the isolated system, which includes both the system and its surroundings, would still obey the second law.
So, in short, reducing the total entropy of an isolated system without violating the laws of physics is highly unlikely.