Well when you are eating cereal you want to know how much cereal will be in it but if you put in the milk it is super hard to calculate a good ratio, therefor giving you a worse breakfast. This opponent said "It should go after the milk so it will be absorbed completely and more effectively." Pretend there is a wall covered with cereal and you don't want the milk to get through then the cereal would absorb the milk like a sponge. if you have cereal trying to get through a wall of water, well, it wouldn't absorb as good as the other wall.