ABSTRACT
A restaurateur wants to choose a house Chablis from among twenty producers, so he finds ten people representative of the clientele and will ask each of them to taste each of the twenty brands and rank them in order of preference. In what order should the twenty brands be presented to each taster? The order should not be the same for each taster, because there might be some consistent advantage for the brand that was always presented first. Or, the first position could be a disadvantage since the taster, after tasting twenty wines, might forget what the earliest ones were like. Since the restaurateur doesn't know which positions in the sequence are best or worst, and since he doesn't have enough tasters to create a balance, he should opt for random ordering.
