"Unfortunately, the food industry has not yet faced this situation and begun taking measures to avoid exploiting our weakness for not knowing when we have had enough"

This quote by Marvin Harris is describing the food industry's absence of obligation in regards to the health of its customers. He is recommending that the food industry has actually not taken any steps to prevent people from overeating and becoming unhealthy. He thinks that the food market must know the truth that individuals often do not know when they have actually had adequate to eat and need to take steps to avoid individuals from overindulging. He is implying that the food industry should be more mindful of the health of its consumers and take actions to make sure that individuals are not consuming too much. He thinks that the food market must be held responsible for its function in the health of its consumers and must take actions to prevent individuals from eating way too much.