In his book "Eating Animals," author Jonathan Safran Foer discusses how the evolving world has influenced our values and the choices we make, particularly concerning food and animal consumption. He emphasizes that as society shifts, the principles that once guided our decisions may no longer apply in the same way, leading to different ethical considerations and lifestyle choices.

Foer suggests that the complexities of modern life require us to re-evaluate our relationship with food and animals. The changes in our environment, culture, and knowledge about food systems demand a fresh perspective on how we align our values with our actions, highlighting the need for a more conscious approach to eating and living sustainably.