The more memory bricks your amygdala builds, the longer you believe the event lasted. It’s also why time appears to speed up when you’re older—as a child you are building a brand-new brick house of memories, each one fresh and original, but as an adult your house is already built, and it just occasionally needs some new bricks. You live in your house—the house that memories built—surrounded by and defined by your bricks. Some might say trapped within them, even.