In a room, there is a large opaque vase on a table. Mariko is standing on one side of the room and Jamar is standing on the opposite side. If both are trying to see each other, can Mariko and Jamar see each other's faces without moving from their spots? Respond very briefly.
Mariko and Jamar cannot see each other's faces without moving from their spots if the vase is large enough to block their direct line of sight. Since the vase is opaque, it is not transparent, and light cannot pass through it. This means that the vase creates a visual barrier. If the vase's width is greater than the width of their faces, it will obstruct the view from one person to the other. Each person's line of sight will end at the surface of the vase, preventing them from seeing what is directly behind it. Therefore, without moving to a different position to get a clear line of sight that bypasses the vase, neither Mariko nor Jamar can see the other's face.