The answer will determine not just the future of farms and labs, but the moral character of our species. As the philosopher Martha Nussbaum writes in her "capabilities approach," justice for animals requires enabling them to flourish according to their own nature. The cage door—whether physical or philosophical—remains the central artifact of our time.
The ultimate question is not whether animals matter—we all agree they do. The question is how much they matter. Do they matter only insofar as we can reduce their pain before we eat them? Or do they matter as individuals with a life to live, entirely their own? The answer will determine not just the future
In the bustling aisles of a modern supermarket, a quiet revolution is taking place. Cartons of eggs boast labels like "cage-free" and "free-range." Fast-food giants compete over who has the most "humane" chicken slaughterhouse. On social media, videos of rescued pigs wearing sweaters garner millions of hearts. The ultimate question is not whether animals matter—we