Walk up to a farmer standing in the field with his cow, eating the weeds and brush...the herbs of the field. Point at the stuff growing and ask the farmer "Is any of that stuff good to eat?"
The farmer will answer "No fool! That won't do nothing for you. No good at all!"
Now ...look at that cow. Those huge hip bones, Those 4 solid legs. Those big breats hanging that bring forth the milk everyone drinks. Those hard white square teeth that chew up the cud. That thick leathery skin they make long lasting jackets with. The cow is not sick or diseased. It's eyes 'see', it's ears 'hear', all of it's internal organs are functioning. A cube of salt and the herds of the field and it's fine. Ask yourself "How is all of this maintained and sustained?".
Then ask yourself "WHO indeed 'is' the fool?".