So what you are saying is a child who has recently learned to walk, who can stand up and travel to a chosen location without falling over - in control of that walk, yet clearly not a master yet - does not have the ability to walk?
no, they can walk. but is their action deliberate? would you trust a child to walk along the rim of the grand canyon? would you trust a student without deliberate buoyancy control to safely execute a carribean wall dive? in either case, uncontrolled motion resulting from uncontrolled action can have disastrous consequences. or in other words, you need to master "standing" before you can master "walking" .... in my mind anyway.