We said before that relativism can be thought of as an epistemological thesis, a metaphysical thesis, or a linguistic thesis. The metaphysical thesis claims that moral evaluations are not part of the basic furniture of the universe. Instead, moral evaluations are created by people or added to the universe by people.

As a result, someone might say, there is nothing 'out there' for moral evaluations or principles to correspond to or to describe or to be checked against. And it is the absence of this reality that leaves us without foundations for ethics.