Explore evolutionary theories of senescence and recent challenges to the paradigm of inevitable aging in this thought-provoking seminar. Delve into the shift from asking "why we age?" to "why we age but others do not?" and examine the pace-shape framework for comparing aging patterns across species. Investigate the broader question of why anything improves, retains, or loses functionality over time, encompassing living and non-living entities. Consider how population thinking across scales may uncover universal laws of aging, inviting interdisciplinary perspectives on this fundamental aspect of existence.