Acharya Prashant explains that when Ashtavakra refers to the knower of truth as 'dumb', it signifies the disappearance of the tendency to be verbose or profligate with words. This silence arises from a deep self-assurance where the need to boast or prove one's existence through speech diminishes. Similarly, 'stupidity' in this context is not a lack of intelligence but the healing of the compulsive tendency to act cleverly. Ashtavakra uses provocative language to challenge the seeker's ego and insecurities, pointing toward a state where one is no longer driven by the need for security in words or cleverness.