MountainOutOfMolehill Trivialisationism, no?

No Capo. I'm trying to understand what DT means - if he means someone who never opened the book or someone who haven't read it all.
It interests me because it's part of a bigger discussion, of whether partial absorption of books is enough for an argument.
I've studied literature in the past, and many times we were asked to read certain parts of poems and books and then discuss it in class. I always found myself unable to do so unless I read the entire piece. I told the prof that I think it's wrong, he replied that there's simply no time and the alternative would result in studying very few pieces.
There's a lot you can find in a molehill; and possibly nothing in a mountain.