(Forbes) - Can you really taste the difference between a $15 wine and a $150 wine? Wine enjoyment is such an objective experience and taste is not exactly an exact science. During a recent trip to Paso Robles I came face-to-face with my own shortcomings and the ugly truth of wine: much of what we taste is in our heads and not in the wine. I was traveling with a lovely group of wine journalists—each of us boasting some expertise in wine