In a room with two doors on opposite walls, Farid is standing near one door looking towards the other door. Marjorie enters through the door Farid is facing and walks straight towards him until she is halfway across the room. At the same time, Anika enters through the door behind Farid. Without turning around, can Farid be aware of Anika's entrance? Respond very briefly.
Farid cannot directly see Anika entering the room because she is behind him, and his field of vision is limited to what is in front of him and to his sides to some extent. However, Farid may become aware of Anika's entrance through indirect means such as hearing the door open or close, hearing Anika's footsteps, or potentially seeing Marjorie's reactions to Anika entering the room, such as a change in facial expression or Marjorie moving aside. The recognition of Anika's presence depends on environmental factors like noise levels in the room and whether Marjorie provides any visual cues. Without such indirect cues, Farid would not know of Anika's entrance purely through visual information.