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Yukihiro Matsumoto, creator of the Ruby programming language, is speaking at RubyRussia 2019. He talks about the philosophy behind Ruby’s design and evolution, and a little about Japanese life and culture. The most popular question is: "I’m from the language X community; can’t you introduce a feature from language X to Ruby?", or something like that. But getting a positive response to this question is very rare, he says. He says Ruby has different language design and language development policies.