Part of it could be due to conditioning but part of it is due to the fact that 15 TET is just another type of compromise, one that actually puts the perfect fif

Part of it could be due to conditioning but part of it is due to the fact that 15 TET is just another type of compromise, one that actually puts the perfect fifth even more out of tune than 12 TET, even though some of the other intervals are less tempered. I'm sure you've heard about this: https://en.wikipedia.org/wiki/Just_intonation https://en.wikipedia.org/wiki/Just_intonation Most people brush off the concept because of a lack of accessible music, and because a lot of musicians writing the music, well, let's just say they lack a sense of popular sentiment. I don't think it discredits the theory, which is based in physics. Potentially, tuning intervals by ratios can be used to write the same style of music we are used to (without tempered intervals) just as well as providing harmonies that we don't have access to in our prevalent (Western) tuning system.