You cannot invent an algorithm that is as good at recommending books as a good bookseller, and that's the secret weapon of the bookstore - is that no algorithm will ever understand readers the way that other readers can understand readers.
John GreenRight, well, he'd been sick for a while and his nurse said to him, 'You seem to be feeling better this morning,' and Isben looked at her and said, 'On the contrary,' and then he died.
John Green