Acharya Prashant defines evil not as a grand external force, but as a stubborn, recurring, and iterative mistake. While sinning is a single error, evil is the incessant repetition of that error until it becomes one's perceived nature. He explains that man naturally seeks support because he feels defenseless; evil arises when one chooses a support or agency that is unworthy of reverence. This leads to a state where the individual becomes a 'mistake' themselves, identifying so strongly with their errors that they view them as infallible and inevitable. Consequently, the person refuses to acknowledge they are living wrongly, even in the face of constant suffering and evidence.