How do the repeated appearances of Banquo’s Ghost impact the Banquet and Macbeth in Act III, Scene…

In Act III, Scene iv, the ghost of Banquo appears twice during the coronation banquet, each time occupying the seat reserved for Macbeth. The first appearance occurs right after Macbeth hypocritically laments Banquo’s absence, shocking Macbeth into terror and violent outbursts as he addresses the silent apparition. Although Lady Macbeth attempts to manage the crisis by dismissing his behavior as a customary, momentary fit, the ghost reappears when Macbeth offers a toast. Completely unnerved, Macbeth raves in terror, challenging the ghost to approach in any dreadful shape except that of Banquo. His uncontrollable agitation shatters the ceremonial harmony, hierarchy, and dignity of the feast. Lady Macbeth is ultimately forced to abruptly dismiss the Scottish thanes, ordering them to leave without regard to their rank. The banquet ends in utter disarray, exposing Macbeth’s profound guilt, mental instability, and tyrannical paranoia to the Scottish nobility.