A "rāga" is sometimes explained as a melodic rule set that a musician works with, but according to Dorottya Fabian and others, this is now generally accepted among music scholars to be an explanation that is too simplistic. According to them, a "rāga" of the ancient Indian tradition can be compared to the concept of non-constructible set in language for human communication, in a manner described by Frederik Kortlandt and George van Driem.; audiences familiar with raga recognize and evaluate performances of them intuitively.