Abstract

Just as one line appears to be longer than another in an optical illusion, we can have a spontaneous moral judgment that one individual is more important than another. Sometimes such judgments can lead to moral illusions like speciesism and other kinds of discrimination. Moral illusions are persistent spontaneous judgments that violate our deepest moral values and distract us away from a rational, authentic ethic. They generate pseudo-ethics, similar to pseudoscience. The antidote against moral illusions is the ethical principle to avoid unwanted arbitrariness. Speciesism involves unwanted arbitrariness, and psychological research as well as the problem of wild animal suffering demonstrate that moral illusions such as speciesism can be very persistent.