Comment The article basically includes a claim in its own lead section that implies it is a content fork Chaosdruid aptly points out above that deep learning is a subtopic of artificial neural networks  But that contradicts the quote included in the lead section of the deep learning article  There is no explanation anywhere in the article on how deep learning is related to neural networks so the readers are left to figure it out on their own  If they take the lead sections word for it they will go away with the belief that deep learning is not a subtopic of neural networks which is what the lead strongly implies  See TalkDeep learningDeep learning synonymous with neural networks