Let us compare wire to fine foods. I have a friend who can taste a dish and tell you the ingredients used in the preparation. I can enjoy the same dish but other than obvious ingredients have no idea what spices or herbs were used. We are able to agree if we like it.

My sense of hearing seems to be more acute than my sense of taste. I think we all have different abilities so it seems normal that some can hear differences in cables and some are not able. I would not argue with anyone who says they taste saffron in a dish.