>>12093840I felt the same way when I was first learing about entropy OP. It just felt weirdly less valid when compared to the conservation of energy.
1. What's important to understand is that in scientific terms, Laws are a term that means it describes an observation. All that means is the evidence we have to date indicates that THIS is happening. Not even HOW or WHY it's happening, just that it is.
2. The second law of thermodynamics is often presented in a simplified form that can cause confusion. A better way to think about it is through a statistical trend over time. It's perfectly possible that particles in a system could randomly arrange themselves in a state of less entropy (see boltzmann brain).
Imagine you roll some six sided dice and divide by the number of dice you rolled. On average you would get around 3.5. The more you rolled, statistically, you are more likely to get closer to 3.5 than to tend towards the extremes of 1 or 6. Again, it's perfectly possible, just improbable.
https://en.wikipedia.org/wiki/Second_law_of_thermodynamics#Statistical_mechanicsFor everyday (macroscopic) situations, the probability that the second law will be violated is practically zero. However, for systems with a small number of particles, thermodynamic parameters, including the entropy, may show significant statistical deviations from that predicted by the second law. Classical thermodynamic theory does not deal with these statistical variations.
So the more dice you throw (particles in a system interacting), the more likely you will tend towards the average.
Hope that helps
