After having read more than half the novel

Now I have read until chapter 16 and it happened a lot of important things. Sam had his first girlfriend, Alicia, and they have got a baby together. After the baby was one hour old, Sam´s mother and Alicia´s mother discussed about the surname of the little Rufus. But when Alicia´s father came into the cubicle, Alicia finished the discussion. Because she said the surname would be Sam´s surname. Sam´s mother has a new boyfriend, Mark, and they will get a baby too.
The life after Roof´s birth is exactly the same as it was announced in the whizzer into the future.

I´m very annoyed about the whizzer into the future, because it disturbs the reading. And about the fact, that Sam doesn´t understand anything. He seems to be stupid. And he needs a long time to understand things.

To Nick Hornby :

* Are you skater or why do you know so much about it?

* Why did you write this book?

* Is the person "Sam" still alive or is it an imaginary person?