Othello may very well possess a great military mind but in matters of the heart, he's easily fooled. Misinformation, planted "proof" and deliberate lies are part and parcel of Iago's plot, and Othello falls for all of it. No one is above suspicion in Othello's mind, except, ironically, the perpetrator of the lies. Be sure you understand how Iago is using Othello and other characters to his evil ends by taking our exclusive, interactive quiz to Act 4, Scene 1 of Othello. Rank your score against others and see how you compare. What have you got to lose? Nothing! What do you have to gain? A better grade!