This is a "Same planet, different worlds" photo. Kids don't live in the same world as adults. You just know that Mom's mind, here, is more or less occupied with her errands, whatever they may be. Her son's mind, on the other hand, seems to be occupied, pretty much, at the moment, with his walk. He's marching. He's going somewhere, and it's not got anything to do with whatever's in Mom's mind. Mom's got a head full of adult responsibilities. He's got a head full of dreams. Lucky kid.