When a baby stands and for the first time lets go of all furniture to take an independent step, he has made a move of great importance individually and historically. He now accepts the risk of defying gravity, except for the contact of a few square inches of the soles of his feet on the ground. It is an extremely precarious position in which to be. It is a position that only man, of all nature's creatures, has achieved. It is exciting, it is dangerous, it is exhilarating. It is the highest of man's mobility adventures. In terms of mobility it is full citizenship at last.
 
When a child can stand up in the middle of a room, can walk across a room independently, and chooses walking for transportation, he or she has earned a Walking Victory.