The source is this Tech Times article http://www.techtimes.com/articles/212124/20170730/facebook-a... which doesn't seem to have any checkable sources. The research published back in June shows that Facebook got the AI to speak in normal English sentences. https://code.facebook.com/posts/1686672014972296/deal-or-no-... So maybe this happened since then? Anyway, here's a more level-headed article from Fast Co which points out that this kind of thing happens on a pretty regular basis. https://www.fastcodesign.com/90132632/ai-is-inventing-its-ow...