I agree with this, foo/bar/baz stuff is abstract and means nothing. This means the learner need stop associate something they don't know with nothing which is really hard. An analogy of something the learner knows is way easier to grasp..
149 karma · joined February 6, 2015
However, I do find it annoying that when it asks what state I live in and I answer "I don't live in a state" I get a response in the line of "Well I do, so what state do you live in?" That really annoyed me big time, it's also a pattern I saw in many other sentences I typed.