Comment by lumost

What makes entropy interesting is that you can describe many physical processes through analysis of the systems degrees of freedom. This pattern repeats regularly despite the systems being radically different.

So you can interpret entropy as being about as real as potential energy or newtons laws. Very useful for calculation, subject to evolution laws which are common across all systems - but potentially gives way as an approximation under a finer grained view (although the finer grained view is also subject to the same rules)