The two things that a book should do:
Inform, or transform.
As an editor and publisher, I have learned so many things, from growing and distributing marijuana to cocaine, from evading and capturing the bad guys, the secret lives exposed in memoirs.
Sometimes, along comes a novel that is exceptional. My soon to be released "Legend" is one of those.
It has transformed my look at nature, its ills and goodness. I will never look at things the same.