https://www.youtube.com/watch?feature=endscreen&NR=1&v=Gl46vGQKbiw

I have long been of the opinion that only native-born English speakers should teach English; however, after listening to the charming, endearing, Korean FT(at link above) I am not quite so sure of my my position. Real pain these things that come along to make you question your beliefs-unassailiable truth or unassailiable truth?