It’s obvious that we human beings are all pretty different from one another—in appearance, experience, attitude, gender, and countless other attributes. Each of us has things that come effortlessly and others at which we struggle. It goes without saying that these differences affect our abilities as tasters. But how, exactly?
From the glass on the table to the smells of the beer frothing up, to the sights and sounds of the barroom and beyond, our world usually feels solid and reliable enough. It is an illusion, however—nothing more than a projection created by our highly fallible perceptions. Ancient wisdom makes a point of it; modern science increasingly verifies this unsettling truth.