by Paul Winalski » Tue Nov 03, 2020 6:54 pm
[rant]The Robert Parker scale is actually a 50-point scale since 50 is the lowest possible score. Its popularity is due to the way it kinda sorta lines up with the percentage system commonly used in the USA for grading school exams: 50-59=failure; 60-69=below average; 70-79=average; 80-89=above average; 90-100=outstanding. The UC Davis 20-point scale is more complicated.
In my academic training in the experimental sciences I had beat into me the concepts of precision and accuracy in measurements, and especially the importance of not reporting precision to which a measurement isn't entitled. IMO, reducing the evaluation of a wine to a single number is questionable and dodgy at best, and if you are going to resort to a number, a 20-point range is a claim to more precision than you're entitled, and 50-points is preposterous. That's why I use Stuart Yaniger's Three Stooges rating scheme in my wine tasting notes.[/rant]
-Paul W.