Sitting on the bus, you sometimes see his face in the mirror in the driver’s cab. Does the driver see your face in this mirror?

Yes. According to the principle of reversibility of the path of light rays. The passenger sees the driver’s eyes, because the light reflected by them is reflected from the mirror and enters the passenger’s eyes. If you send the light beams back, then now the driver will see the eyes of the passenger.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.