This lecture was recorded at the Polyglot Gathering in Berlin 2016 (http://www.polyglotberlin.com). The official sponsor of this conference was http://www.italki.com . Lightning Talks are a chance for anyone to give a quick resentation (up to 5 minutes) about a topic they're interested in. There is no Powerpoint, no preparation of any kind - just a quick succession of interesting tidbits.