Situation: Sitting by a table against the wall. There is no more chair on my left.
Alternative situations: With no one sitting in the chair to the right and behind me , I can enjoy my meal in peace at this table. I am sitting on the table on the left side of the room, bottom left chair tapping on the table with my knuckles on the table.
Question: Can I get an obstacle if I move any further forward from my current position?