Can tasting notes be too exact?
Some wine experts say that this kind of description is counterproductive: interpretation of scents and flavors tends to be subjective, so it's best to just identify families of flavors (e.g. "citrus" or "berries"). According to this point of view, different people are going to come up with different descriptors within those ranges or families, so there is no point trying to nail it down more closely than that.
Still, how is one able to explore the intricacy that marks truly great wine that way? I recognize that this type of wine description has its place: certainly when writing descriptions for a mass market this is probably a good thing to keep in mind. Give the consumer a general feel for what to expect, but don't set them up for blackberries when they might taste black currants. This makes perfect sense.
When writing wine reviews for personal notes in an attempt to learn about wines or to track one person's perception of wines over time, general reviews are usually not the best approach. In this setting, a person is trying to stretch their appreciation of wine, so attempting to express completely the nuance of their sensual experience is more helpful.
The difference in the two review philosophies of tasting is related to the two separate scientific concepts of precision and accuracy in measurement. These concepts are not quite the same thing, though they go hand-in-hand.
Accuracy in measurement means getting a reading that is as close as possible to the real-world physical quality of the thing being measured.
Precision means something subtly different: the goal is to get measurements that are as repeatable as possible. A precise method of measuring something means that scientists from around the world can measure the same thing and get very similar results. It also means that the same person measuring the same thing will get the same result each time. Sometimes accuracy must be sacrificed in order to do this.
You can see why a reviewer who is writing for a wide audience will value precision over accuracy, and why personal wine notes would value accuracy over precision.
Here are two links about accuracy and precision. This link is a more general explanation, with a good visual representation of the different types of results from measurements that are accurate or precise. This link goes into more detail about the subject, with another good visual representation, though you will need to be familiar with some basic statistical concepts to understand it.
