Taking 'If you need this book, it is probably too late' unless you are about to take an SAT or GRE.' as a given, does it logically imply 'It's never too late, unless you're about to take a test.'
If you need this book, it is probably too late' unless you are about to take an SAT or GRE.###It's never too late, unless you're about to take a test.