“True” and “False” is easier to determine in science than in ethics. If we disagree on the color of snow, whether white or red, then it is easy to reach to the correct unique answer (i.e., White) by showing snow physically, which brings down any dispute.

This simplistic solution is difficult to reach in ethics. Dispute about meta-physical, intangible issues is difficult to settle. Can I say –and gurantee the correctness of my saying- something is “good” and something is “bad” or something is true and something is false, or something is virtue and something is vice? Can I raise my voice saying something is “just” and something is “injustice”?