This book is so short. Just read it. It’s awesome.
Update:
Here is a well-written opinion by John Scalzi. He didn’t like the book. I agree with the points he makes: the book is silly, you should be making your own cheese, help your friend, etc. Nevertheless, I still like the book. It’s a simple to digest story about adapting to change instead of whining and doing nothing about your situation. And we don’t want that, do we?