No. If each piece of real gold weighs a pound then 16 bags should weigh 136 pounds. If bag 16 had the fakes, then you would have 137 pounds on the scale. You see you just subtract the expected weight from the actual weight, in ounces, and it reveals the bag number, regardless of working in pounds or not. It would work equally well if you added up in ounces so that one would expect 2176 ounces.