Nutritionist: Your company's fruit-processing technologies add unacceptable amounts of copper to the orange juice you sell  Because copper blocks the absorption of Vitamin C, your advertising campaign claiming that your juice is a good source of Vitamin C is faulty and should be removed  Juice Manufacturer: Some amount of copper is necessary for optimal health
Recent studies have shown that as many as 25 percent of Americans do not get enough copper in their diets; ttherefore, the benefits of the copper that our process adds to the juice outweigh the costs of any Vitamin C that it may block
shows that the nutritionist's evidence about copper is irrelevant but fails to demonstrate any flaws in the nutritionist's assumptions.