This is a betting machine, made to test the normitive definition of you know right?

Two buckets of ice with holes in the bottom hang, slowly melt dripping the water out the bottom. as the buckets move up the small containers on the bottom move down pouring out water into the even smaller even lower cups where there is a candle. eventualy the water over takes the flame and it goes out the first to guess which is the first to go out wins and knows their logic is sound.