Wine Guide controversy: Tasting blind and tasting open
I'd like to point out one more aspect of the Gault-Millau debate, namely that the way scores come about plays an important part in the sorts of arguments that can be made against a wine guide.
Gault Millau tastes openly, that is to say every taster knows which wine he is about to score. That has a positive side, as a wine can of course be appreciated more fairly when you have some context to go with it, some experience of the kind of quality that a certain producer has shown in the long range, and other things. The negative side is this: Faced with one producer's range of wines, any taster will tend to give scores that reflect the hierarchy of quality that the pricing suggests, rather than a strictly objective evaluation of every individual wine.