I had the pleasure of attending a presentation by Yukihiro Matsumoto (aka “Matz”) on Ruby 1.9 today. I had heard that he is a very nice guy, and he definitely came across as very charismatic. He is not particularly fluid in English, and in previous interviews I had heard with him, he often used an interpreter. But I was impressed that he actually delivered the presentation (and Q&A) in English. He