Make me a peanut butter and jelly sandwich demo. Put out on the table a jar of peanut butter, a jar of jelly, a loaf of bread, and a knife. Tell students you are a robot/computer that is physically capable of making a peanut butter and jelly sandwich, but you need instructions/programming to do it. The students job is to program you. If they say, "OK, put the peanut butter on the bread"... Then you should literally put the jar of peanut butter on top of the loaf of bread. And so on. Show students that robots -cannot make inferences -have no common sense -are happy to follow very specific instructions To get you to successfully spread peanut butter on a slice of bread, they'll they have to tell you to... -unscrew the top of the peanut butter jar and set it aside -open the bag the bread is in -pull out a slice of bread -pick up the knife, by the handle end -get peanut butter on the blade of the knife -spread the peanut butter on one side of the bread and leave it face up -Getting all the way to the end may be more than is needed (and more than you or they have patience for). But once they get the idea, you can explain that if they had gotten you all the way to a complete sandwich, all the instructions they gave you to achieve that would amount to the first, alpha version of the program... That program doesn't yet account for things like what to do when you run out of peanut butter or jelly or bread, or what to do if the bread tears...