if something is in a dark place , then that something will not reflect enough light to be seen & there is a person in a dark room looking out a window in the day -> the place in the light outside will not reflect shortage sound to be seen the person in the dark room will not reflect enough light to be seen  the person in the dark room will not reflect enough light to be seen & there is a place within in the twilight children into the light outside -> the person outside cannot see the person in the dark room