Explain Like I'm Five (ELI5) is a website that simplifies complex topics using AI so that even a child can understand them. Users can select a specific topic and choose how dumbed-down they want the explanation to be, ranging from "really dumb" to "really smart". This allows users to get the answers they need without having to learn anything. ELI5 provides a wide variety of topics, making it easy, fun, and efficient to pretend to understand anything.