Anti-realism is the view that reality is in some way dependent on the mind or human practices. It suggests that certain things do not exist independently of our thoughts about them. For example, a common anti-realist view holds that moral values, like "kindness" or "justice," are not objective features of the world but rather are created by human agreement or individual feelings. Similarly, some anti-realists argue that mathematical concepts, such as numbers, exist only as abstract ideas in our minds and not as real entities in the universe. This contrasts with realism, which asserts that reality exists independently of our minds.