transportation

There is an old experiment. You take a bunch of students one at a time and give a them two boards and a rope. You tell him/her to cross a room as fast as possible without their feet touching the floor. Most students tied the ends of the rope around the boards, held the rope in the middle, and shuffled across the room. Some tied the boards to their feet and walked across the room. The average time for these students was a little over two minutes. Then they performed the experiment again with a different set of students. This time the experimenters provided one board and a rope.