Because scoring is by show of hands at the end, so if someone gives it a 1 they must explain what the fault is.)I have used the 20 point scale in competitions and the 100 point system at CellarTracker, but in the 20 pointer basically it was whether the wine was a gold, silver, bronze or not, thus only 5 points mattered, and in the 100 point scale, well its only the top 15 that matters...