This week we go back to the world of artificial intelligence and review a recent work from Stanford University on the use of deep neural networks to interpret ECG rhythms. How good did a novel algorithm do in comparison to cardiologists in characterization of rhythm abnormalities? What are some novel uses of AI in medicine today and how can AI potentially identify signs of disease that even human scientists are unable to discern? We discuss these interesting questions and many others with Pranav Rajpurkar who is a PhD candidate in computer science at Stanford University and a co-author of this week's important work that we review. doi: 10.1038/s41591-018-0268-3.