lifetimestrillions
lifetimestrillions is a proposed unit of measure used in long-term planning and risk assessment to quantify the cumulative lifetime potential of a population or system, expressed in trillions of person-years. It aggregates the lifespans of individuals over a defined period, providing a single scalar that can be compared across scenarios.
Origin of the term appears in discussions of long-term impact assessment from the 2020s onward, where researchers
Definition and calculation: lifetimestrillions equals the sum of the lifetimes of all individuals within the analysis
Applications: proponents use lifetimestrillions to evaluate long-term policy impact, including investments in health care, education, climate
Limitations: as a high-level aggregate, lifetimestrillions can obscure distributional details, quality of life, and inequalities. Data
See also: life expectancy, person-years, cohort analysis, intergenerational ethics.