Owen, three-years-old, feels the wind on his face and realizes the source of this invisible force. At first he approaches the front of the fan with one hand, palm parallel to the grill barrier over the blades. As the cool force hits his palm, he smiles at his teacher, communicating his joy. He places his hand very near the grill but decides not to touch the grill, as though he understands that the wind is something that comes from the grill but is not the grill itself. He touches the grill to move it slightly, as if to confirm that the feeling of the wind will be different than the feeling of the grill.What to do next? Owen brings both hands in front of the grill, palms parallel with the plane of the fan, fingers splayed outward. Perhaps he seeks to test the scope of the wind – how wide it might be. One hand at a time would only tell him that the wind blows at that one spot. Two hands tell him that this “one” wind spans at least the distance between his two hands