In which case would water fall out of the tank faster? 1) If I were to take a tank filled with water and bore a large hole in the bottom of it with some area 2) Riddle the bottom of the tank with small holes that have an area that adds up to the area of the first big hole. In one scenario lets assume that the material of the bottom of the tank has no thickness. What about if there is some significant thickness? Is it possible that the holes can become small enough (but numerous enough to still sum up to the required area) that no water will escape? Maybe the water molecules could be larger than the holes?