Looking ahead, the quietude of this hall might shift as more patrons arrive for an afternoon workshop. The children on the central carpet could soon finish their story and transition to a hands-on craft activity, which would likely increase the noise level. We can expect the young woman at the desk to complete her research project, at which point she might return her borrowed books to the circulation counter. The elderly man could decide to trade his newspaper for a biography found on the nearby shelves. Furthermore, as the sun moves across the sky, the library staff would probably adjust the lighting to maintain a comfortable reading environment. Eventually, as closing time approaches, the librarians may begin tidying the workstations, and the diverse group of visitors would slowly depart, leaving the stacks in stillness.