Situation: I am sitting on the chair of the third row with two chairs on my right and one on my left.
Alternative situations: I am seated in the second chair from the left in the third row leaning towards the chair in front of me. I am sitting on third aisle, 2nd second seat from left to right nodding off at the lecture being presented in front of me.
Question: If I work to the whiteboard , what will be in my way?