How Does a Computer Actually Know What You're Thinking?

Imagine your brain is like a radio station, and the computer is a receiver. When you think about something, like pizza, it sends out tiny signals called neural messages. The computer listens to these messages with electrodes, and by learning what each message means, it can guess what you're thinking. It’s kind of like how your phone learns that when you say 'Hey Siri,' it should listen for a command.