Algorithms that set the price of things online are becoming more common. But what happens if those price-setting algorithms get together? Collusion.Beer-makers around the world are now using machine learning to optimise beer recipes. New approaches to AI mean computers are getting much better at creating things that can trick us. Thanks to open source software anyone can create video and images of people that Do. Not. Exist. How do they do it, and what does this mean for our ability to tell what's real anymore?