Asides can be effective in a number of ways. They can:
* Create intimacy between the audience and the character. By speaking directly to the audience, a character can create a sense of trust and connection. This can be especially effective in creating empathy for a character, or in making the audience laugh.
* Provide comic relief. Asides can be used to provide comic relief by breaking up the tension of a scene, or by poking fun at the characters or the situation.
* Advance the plot. Asides can be used to provide important information about the plot, or to foreshadow future events.
* Comment on the action of the play. Asides can be used to comment on the action of the play, or to provide a moral or ethical perspective on the events.
Asides can be a powerful tool for playwrights, and they can be used to great effect in a variety of ways. However, it is important to use asides sparingly, as they can become distracting if overused.