In most matters of taste, when you do preference surveys, you'll find that most people don't really know what to choose, and will opt for the one that seems most familiar.
If taste is just personal preference, then everyone's is already perfect: you like whatever you like, and that's it.
如果鉴赏力仅是个人喜好，那每个人都是完美的：你无论喜欢什么都行，不必多说了。
3
After dinning into you that taste is merely a matter of personal preference, they take you to the museum and tell you that you should pay attention because Leonardo is a great artist.