Today I have a very special guest. Leszek is a 17-year old who impressed me greatly whenever I would open the Memrise leaderboards. He would routinely get 10 times as many points as me in a month, which would indicate a very high level of activity. He's also fascinating because he is part of the young polyglot revolution, where teenagers start learning languages very early and do so very successfully. Another example of this is Tim Doner, who everybody probably knows by now.