I sponsor our schools Lego League Robotics team. As a team building excercise before coding students were asked to move their team mate from one location to another using directions. The student who was going to move from point a to point b was not able to create the instructions his/her teammates did this. At the end his/her teammates gave them directions that they had to follow without question. When we discussed how well it when students noted different ways they could have made the directions more specific.
I think the code.org unplugged lessons help the students come to the same idea; i actually saw a similar idea in "My Robotic Friends".