Chen, Amira, and Jaxon are in a room with two doors, one red and one blue. Chen leaves the room through the red door. Once Chen has left, Amira secretly paints the blue door red while Jaxon is asleep. When Jaxon wakes up, he sees both doors are now red. Without any additional information, Jaxon has to guess which door Chen left through. Later, Chen comes back into the room through the original red door and places a green sticker on it, without saying anything to Jaxon or Amira. Amira knows how Chen left but does not know that Chen has returned and put the sticker on the red door. Jaxon is now in the kitchen when Amira enters the room again. Knowing what she did earlier, which door will Amira think Chen originally left from after she notices the green sticker? Provide a short response.
Amira, aware of her own action of painting the blue door red while Jaxon was asleep, and not knowing that Chen has come back to place a green sticker on the original red door, would still believe the door without the green sticker is the one Chen left from. This belief is based on her knowledge that when she painted the other door, there was no differentiation between the two doors and she was the only person aware of this change. Amira's perspective has not been updated with Chen's action of marking the original red door with a green sticker, as she was not present or informed of this event. Seeing the green sticker on the original red door upon re-entering the room would not alter her knowledge of which door was originally blue and which was red, as the green sticker's significance is unknown to her; she would likely be confused about its presence but would rely on her previous knowledge to deduce which door Chen exited from before the color change she made.