I strive to be at the informed part of the spectrum.
Wine example:
- Novice: "I'd like any red wine" -> waiter brings you something you don't like
- Informed: "I'd like a red wine that is dry, not st" -> waiter brings you something you are quite likely to like
- Asshole: "Do you have an Argentinian malbec from 1998-2000, from the so and so valley?" -> you spend a lot of money and like the wine, or you are unhappy because they don't meet your asshole preferences
*edit formatting