Humans and robots from Europe and beyond improvise together " each in their own languages. Improvisers communicate through machine-translation technology, via surtitles and earpieces. AI chatbots chime in and add to the fun in this multilingual Turing test. The Rosetta Stone helped us decipher hieroglyphs " the challenge of Rosetta Code is to decipher who is human and who is a robot. This comedy of speech-recognition errors by Improbotics brings a new meaning to being lost in translation.