The Bern Dibner Library of Science and Technology at NYU-Tandon School of Engineering adopted an assessment methodology that was central to the librarians' understanding of current environmental issues and their attempts to craft a better user experience. This method of gauging and analyzing occupancy revealed problem areas and was an invaluable tool in efforts to adopt the best solutions to problems it highlighted. It involved minimal cost: a data collection application and Microsoft Paint, and student labor for collecting occupancy counts. The data it provided enabled the library to improve services, redesign learning spaces, and improve outreach activities.