A few months ago I attended a conference on multilingualism at which there was much talk of "inter-comprehension". This seems to be the new Esperanto, the last redoubt before the world is invaded by Globish. Basically, it means talking to someone in your own language and listening to them talk back in their language. So far, so good, but I was not quite clear about the comprehension part. However, participants enthused about learning what interpreters would call a C language in a matter of hours.