I am inspired to create this topic because of having to deal with vets quite a lot recently. To cut a long story short I had to put my elderly dog to sleep (no worries he had a long and happy life) , and the vet fees included the cost of cremation, and the dear old pooch was greater than such and such weight but less than such and such weight so placing him in a certain cost zone. OK, I understand that heavier dogs are going to cost more to cremate than little 'uns, but why have zones and not a formula? Surely a formula would reflect the true cost more accurately. On the same theme but potentially far more critical is the issue of medication. Even the amount of medication I had to administer in his ill health was zoned according to his weight! I know Nature abhors a vacuum but I am equally sure it tramples on man made zones. So I am left pondering whether it is a fear of lack of mathematical understanding on the part of the general populace that has resulted in the prevalence of rather inappropriate and clumsy zones.