Which of our five human senses — sight, hearing, taste, smell, and touch, — are the most useful in our assessment of the vineyard attributes that affect wine quality? My answer is undoubtedly sight, for the reasons I will give below. But why would one dwell on this seemingly obscure topic at all? Well, it seems to me that in assessing vineyard attributes we frequently overlook sight, which is actually one of the most powerful tools we have available.