Robot English teacher "EngKey" in Daegu elementary classrooms

Today morning, I heard on KCLU Radio--a live American radio channel available on NPR App. on my iPhone--about a remote-controlled robot teaching English to kids in a classroom of an elementary school, Hakjeong Elementary, in Daegu, South Korea, as an assistant to a human teacher. The robot interacts with kids, showing video and correcting their pronunciations one on one. An outsourced Filipino teacher controls the robot which can move anywhere in the classroom. The argument for this robot teaching is that it costs half the moneny--about USD $40,000--the government pays for employing a native English teacher from abroad. Of course there might be downsides to robotic teaching. Critics are pointing out lack of human interaction in it, arguing that the most important thing that English learners should take away is human interaction. Well, in my opinion, that's nothing to worry about too much because the students are sufficiently immersed in human interaction in non-English classes and activities outside school. If human interaction is that much essential, what about learning English from TV, radio, video and the Internet? Are they all seriously flawed ways of learning the language? In fact, those methods are even short of the quasi-human interaction that a robot teacher can provide. Language-learning is an area where virtual reality can be most effective. A robot teacher will go a long way to succeed and will eventually take root in Korean classrooms after constant inovation.