It’s the reason why months go by too quickly, or years, even, and it’s like there’s almost no memory of it—an overload of routine that the brain registers as unimportant. But a new experience is something special. A bookmark. A highlighted section in the pages of your life. It’s the reason why you can remember the exact way your shoes felt on your first day of first grade or the exact light of the room when you had your first kiss but can’t remember what you did last Tuesday.