/lit/ - Literature

Small question about an essay /lit/ I am writing a book review and must judge the author. When a professor ask "What kind of evidence does the author use to make his/her case"

Is my professor just trying to say. Does the author cite all the shit he says and back it up with quotes and sources?

Nice, thanks. But any specific books and not just authors?

Well written, complex, mildly amusing, pointless, rambling, unimportant drivel. It's impressively written and very convoluted but I was left with no feeling of attachment to the story, the characters or the author. I feel like I have wasted energy and time reading it. Yeah it's a well executed twisted tale of some poor guys life. But why? What's the point? Why write it? More importantly, why would anyone benefit from reading it?

tl;dr
Epic fail