Imagine that you had a farm, with arable land, ( on which you grow crops ), and pasture for 200 dairy cows, and that after years of using a standard fertiliser you begin using a new enhanced spray fertiliser on your fields and the following spring you notice that 5% of the calves are "different".
Some of them need huge amounts of care, often seem distressed, and turn out to be unable to breed or produce milk, some of them seem very depressed and are only semi-productive, and a few seem fairly happy, if a little odd, and produce especially good milk, or have remarkable hides for top quality leather goods.
The following year, after continuing to use the new enhanced fertiliser, even more of the calves are "different". And so it goes on until 10% of the calves born are different, and you have a lot of animals to care for that will never breed or produce milk, and others that seem very miserable, aswell as the small minority which produces exceptional milk and high quality leather.
You have realised that it is the new enhanced fertiliser which is having this effect. The cost of looking after the unproductive cows keeps rising. NB. The fertiliser has increased your crop yield enormously but you have noticed field-erosion as a result of mineral leaching.
What do you do?
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Last edited by ouinon on 03 Mar 2009, 11:10 am, edited 2 times in total.