Originally Posted by
billgrates3
I guess 50/50 qualifies as "rarely"... although I would guess the middle seater would more likely go to the left, as that's where the two (instead of the previous three) lavs are, which might improve your odds in 9G to 60/40 or 70/30 even.

If one passenger is sleeping they will go the other way. Also if 2 are travelling together the middle passenger will not disturb you.