1. The document describes the Human Aging System Diagram (HASD) project, which aims to systematically organize knowledge about human aging processes and determine future directions for solving aging issues.
2. HASD is a multidisciplinary project between gerontology and cognitive science that uses a visual diagram to qualitatively describe the cause-and-effect relationships between aging processes, moving from primary causes to pathologies and death.
3. The diagram is developed through expert interviews with gerontologists and distributed work aided by visualization software, with the goal of providing sufficiently detailed aging process information to identify potential interventions.