Answer:
You see a boat filled with people. It has not sunk but when you look again you don't see a single person on the boat. Why?
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I’ve told you all I cannot tell you more.
I live above a star who never burns. I have 11 neighbors but they never turn. My initials are p q r and sometimes s.
I always have to work with something in my eye.
I am black within and red without; with four corners round about. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.