Yet on some level we do know the truth. We know that meat production is a messy business, but we choose not to know just how messy it is. We know tha… - Melanie Joy

The carnistic schema, which twists information so that nonsense seems to make perfect sense, also explains why we fail to see the absurdities of the system. Consider, for instance, advertising campaigns in which a pig dances joyfully over the fire pit where he or she is to be barbecued, or chickens wear aprons while beseeching the viewer to eat them. And consider the Veterinarian's Oath of the American Veterinary Medical Association, “I solemnly swear to use my … skills for the … relief of animal suffering,” in light of the fact that the vast majority of veterinarians eat animals simply because they like the way meat tastes. Or think about how people won't replace their hamburgers with veggie burgers, even if the flavor is identical, because they claim that, if they try hard enough, they can detect a subtle difference in texture. Only when we deconstruct the carnistic schema can we see the absurdity of placing our preference for a flawless re-creation of a textural norm over the lives and deaths of billions of others.

We send one species to the butcher and give our love and kindness to another apparently for no reason other than because it's the way things are. When our attitudes and behaviors toward animals are so inconsistent, and this inconsistency is so unexamined, we can safely say we have been fed absurdities. It is absurd that we eat pigs and love dogs and don't even know why. Many of us spend long minutes in the aisle of the drugstore mulling over what toothpaste to buy. Yet most of us don't spend any time at all thinking about what species of animal we eat and why. Our choices as consumers drive an industry that kills ten billion animals per year in the United States alone. If we choose to support this industry and the best reason we can come up with is because it's the way things are, clearly something is amiss. What could cause an entire society of people to check their thinking caps at the door—and to not even realize they're doing so? Though this question is quite complex, the answer is quite simple: .

The animal liberation movement is fighting what is arguably the most entrenched and widespread form of exploitation in human history: speciesism.