How does Google know what you’re thinking?

They record everything. They have your IP address, your search requests, the contents of every e-mail you’ve ever sent or received. They know the news you read, the places you go. They’re even collecting real-time GPS location and DNS look-ups,” Marlinspike said.

Why does it seem like Google knows what I’m thinking?

By triangulating that data, Google can know even more about you, because they track you across websites using cookies that respond to their ad code. In this way, they know what you search for when you use Google, but also any time you surf the Web.