Q: What does the completely free market say about the practice of adding melamine to food to increase protein contents?<p>A: A completely free market would not require food labelling, meaning that protein contents would be unrecorded. Therefore, there would be no point in adding melamine.<p>Q: What does the free market say about the addition of fillers such as sawdust to food?<p>A: If such fillers are in such quantity as to affect the quality of the food, the food product will command a lower price in relation to other, higher quality products. If not, well, no harm, no foul.<p>Q: What if there are no higher quality products? What if the manufacturers collude, implicitly or explicitly, or if the costs required to enter the market prevent competition?<p>A: The market will adapt to use other products. Too much sawdust in your bread? Eat cake.