Acharya Prashant explains the fundamental distinction between correctness and rightness using the analogy of a blind person and a person with sight. He describes correctness as a fixed, pre-determined path derived from past experiences, history, or instructions from others. A blind person must follow a specific set of steps to find a door because they lack vision; similarly, living 'correctly' means following rigid rules, morality, and commandments without personal understanding. This reliance on external dictates is a sign of blindness and an insult to one's intelligence, as it assumes the individual cannot see for themselves.