How does William Shakespeare use disguise and deception to create action in Much Ado about Nothing?

Much Ado About Nothing is full of duality, foils, doubles, and two-face deceivers.

• In Act II, scene i there is a masquerade ball.  Don Pedro pretends to be Claudio and woo Hero for him.


• Beatrice pretends to be another woman when she talks to Benedick in order to find out his true feelings for her.


• Don John pretends to be a legitimate brother and soldier.  In reality, he is a villain and a bastard, a dispossessed son.


• Don John and Borachio talk to Claudio, knowing he will pretend to be Benedick in order to hear their secrets.


• Dogberry and the Watch pretend to be more ("more learned") than they really are.  Really, they are a bunch of clowns.


• Borachio woos Margaret but says Hero's name to deceive Claudio and Don Pedro.


• Ursula and Margaret bait Beatrice, saying that Benedick loves her.


• Don Pedro, Claudio, and Leonato bait Benedick, saying the Beatrice loves him.


• Leonato pretends that his daughter Hero is dead in order to investigate her slander.


• Hero pretends to be her sister in order to test Claudio at the wedding.