In a room with a single window, Keiji and Amara are standing with a light source behind them. Keiji notices that Amara's shadow is directly in front of her. From where Keiji is standing, which direction should he look to see the window? Respond very briefly.
Keiji should look in the direction opposite to where Amara's shadow is cast, which is behind her. Since the light source is behind both Keiji and Amara and Amara's shadow is cast directly in front of her, the light must be coming through the window positioned opposite to the shadow. Shadows form on the sides of objects that are not facing the light source, so Keiji and Amara are between the light source (the window) and the shadow, meaning Keiji should look toward the light source to see the window.