In a world where heat does not dissipate normally but instead moves in a straight line like light from a heat source until it hits an object, Tendai and Kee-Sun are standing in a room with a magical heater. The heater is in the middle of the room, and there are several opaque pillars scattered throughout. Tendai is standing in a direct line of sight to the heater, with no pillars in between. Kee-Sun is standing behind an opaque pillar such that the pillar blocks the direct line of sight between Kee-Sun and the heater. What is felt by Tendai and Kee-Sun regarding the heat from the heater?
Provide a brief response.
Since heat in this imaginary world behaves like light and travels in a straight line from the source until it is obstructed, Tendai, who has an unobstructed line of sight to the heater, will feel the heat directly from the heater as there are no pillars between them to block the heat's path.

Kee-Sun, who is standing behind an opaque pillar, will not feel the heat directly from the magical heater because the pillar acts as a barrier. The heat cannot bend around the pillar; it moves in a straight shot from the source until it hits an object. Since the pillar blocks the line of sight, it also blocks the straight path of the heat. Therefore, the pillar prevents the heat from reaching Kee-Sun, and as a result, Kee-Sun does not feel the heat from the heater. Kee-Sun remains unaffected by the heater's warmth unless they move to a position where the line of sight to the heater is clear, without any pillars in the way.