> If you downloaded a book from that website, you would be sued and found guilty of infringement.

Suppose I buy a copy of a book, but then I spill my drink in it and it's ruined. If I go to the library, borrow the same book and make a photocopy of it to replace the damaged one I own, that might be fair use. Let's say for sake of argument that it is.

If instead I got the replacement copy from a piracy website, are you sure that's different?