Professor Raines reading a Black Arts Book.

So about 1hour and ten minutes in, we see Professor Raines in the hospital, he had been reading a book, if you just pause and pull up "The Black Arts" By Richard Cavendish cover art and compare, it is extremely obvious that thats the book he is reading. We have no explanation why he's reading this book. Just wondered if anyone else noticed or might know why he has this book.