I'm 100% serious. Once you have learned to taste the palate of coffee, it's relatively easy to spot even minor over/under extraction issues, and knowing how to

I'm 100% serious. Once you have learned to taste the palate of coffee, it's relatively easy to spot even minor over/under extraction issues, and knowing how to adjust the brew parameters you can create 2 very different cups from the same beans and brew method. Experience enable you to figure out how to make the best possible cup.