"Plonk?" You may not know the difference

Can you tell the difference between an expensive bottle of wine and "Plonk?"  At the 2011 Edinburgh Science Fair, participants in a blind taste test selected the cheap bottle of wine 50% of the time.  What does this really tell us? If you are a Scottish scientist, you may be paying too much for your wine.  The real question is whether they can tell the difference between an 18 year-old Glenlivet and Jim Beam's 8-Star.