Who are you? When were you born? What do you look like? Where do you live? Where will you live in the year 2020? What will people's favorite foods be in the year 218? Will there still be school? Computers? Pizza? Sneakers?
Dream. Wonder. Draw.
This is your own personal time journal that captures the past, present, and your predictions of the future. Record it all now, for someone [or something?] to read it 100, 200, or 2,000 years later....
Scribble in it. Doodle in it. Paste pictures in it. It's your book. There are no wrong answers.
Imagine.