Some people would say that processed food is “unnatural” because it has been created in a lab to imitate other foods. But other people point out that this invokes the naturalistic fallacy, which states that what is perceived to be “natural” or not is determined by how close something resembles our original imagined concept of nature, and since we cannot go back in time and see what nature was like before humans began civilized life, it’s impossible for us to determine whether anything we call “nature” today is really all that natural—or different from the way our ancestors likely experienced nature.