[Grizzled Bear]

...is made of an unknown metallic fiber that is impervious to fire or weather and cannot be cut or torn.

If the book survived the crash, why didn't they make the space ship out of the same stuff they used to make the book? Then the space ship would have survived!

[Rocky]

Pure logic, Mr. Spock.

[Cronos]

If the book survived the crash, why didn't they make the space ship out of the same stuff they used to make the book?

Because it was meant to crash :-P