Michael Cassio is an innocent bystander that Iago uses as a puppet in the play Othello. This holds truth when Othello gives him the lieutenant job that Iago thought he deserved. So since Cassio is good friends with Othello and Desdemona, Iago uses this to convince Roderigo that with Cassio still in the picture, Cassio will court Desdemona if Othello was gone. Therefore, when Cassio uses warming gestures towards Desdemona to comfort her Iago uses it against him. Iago's genius plan is to make Cassio lose his job so he can make Cassio plead for his job back to Desdemona while they make Othello think they are having an affair. Next, Iago plants two things. He plants a bug in Othello's ear about Desdemona and Cassio's affair then he plants the handkerchief in Cassio's quarters to frame him. Lastly, Iago's key idea was to take Roderigo's money, convince...