At its core, lineage truly means a continuous line of descent, ancestry, or pedigree tracing back from a specific ancestor, progenitor, or foundational source. Beyond human genealogy and familial roots, the concept is widely applied across biological sciences to track evolutionary descent from common ancestors, in royalty and dynastic history to trace legal successions of power, and metaphorically in business or intellectual history to describe how methodologies, traditions, or technological developments evolve sequentially over extended periods of time.