Note: I co-wrote this article with Chris Salzberg, an Canadian Rubyist living in Japan who attended RubyKaigi. RubyKaigi is the largest Ruby conference in Japan, Ruby’s home country. It was started in 2006 as a Japanese-only conference; that year David Heinemeier Hansson was the only non-Japanese presenter. But gradually year by year RubyKaigi gained more and more foreign attendees and content. Th