Celtics rookie Tacko Fall is in concussion protocol after the 7'5" center hit his head on the ceiling. Fall says his head struck a "low ceiling" while washing his hands at the team's practice facility. At 7-foot-5, Fall is the tallest player in the NBA. He was not available for the team's season opener Wednesday but is expected to be cleared soon. Tall people - what inconveniences do you live with that the rest of us don't notice? Would you rather be too short or too tall?