The photos to my recent post on the circumference remind me of another bet about a beer glass. Just ask your fellow drinkers the following question:

There are two glasses, one filled with beer and the other one with the same quantity of wine. One takes a spoonful of the beer and pours it into the wine; then one makes the the same in the other direction, i.e., one transfers a spoonful of that new wine-beer mix back into the glass filled with beer. Now in the first glass the beer is spoiled by a small quantity of wine and in the second glass the wine is spoiled by a small quantity of beer. Which glass is more polluted?