Luke, R2-D2, and C-3PO are trying to avoid detection by the Empire. Obi-Wan is using the "Jedi Mind Trick" to manipulate the Stormtrooper into merely believing that R2 and 3PO aren't the droids they're looking for when, in fact, they are the droids they're looking for. ...
As every cute puppy owner knows, if there's food about you can guarantee your canine is in the vicinity, sniffing, drooling and putting on their best sad puppy eyes. You have to have a heart of steel to resist these masters of the beg, funny dogs who know precisely how t...