Okay kiddo, so have you heard of a computer program called "megahal"? It's like a big brain inside a computer that you can talk to and it talks back to you!
This program is designed to learn from what people say to it over time. It uses something called "artificial intelligence" to understand the words you say and come up with different responses. It's kinda like having a robot friend that you can have a conversation with!
Now, because megahal is still learning, it might not always give you the best answers or say things that make sense. But as more and more people talk to it, it gets smarter and better at understanding us humans.
It's important to remember that megahal is just a computer program, so it doesn't have feelings or emotions like we do. But it's still really cool to see how it can understand what we're saying and respond back to us!