Human Capacity is continuously drawn upon within workplaces, institutions, countries, technologies, public systems, communities and other environments. These systems can require capacity, use it, support it, preserve it, develop it, constrain it, redistribute it or consume it.

Indexes make those relationships measurable at units larger than the individual. The unit may be an organization, workplace, institution, country, social system, environment or another defined structure. The variables and indicators change with the object; the underlying question remains the same: what is happening to Human Capacity here?

Institutions usually measure their own outcomes. A company can measure output and revenue. A government can measure administrative completion. A platform can measure engagement. Those measures do not necessarily show what the human had to supply in order for the system to obtain its result.

An index can make those omitted relationships visible: the demands placed on attention, cognition, emotion, physical functioning, coordination, time and recovery; the support supplied by the system; the distribution of those demands and supports; and whether the relationship develops, preserves or progressively consumes capacity.

The Initiative has already developed index work across adulthood, life capacity, life patterns, work and social capacity. These are instances of a broader measurement logic, not the permanent menu of the website.

Keeping Indexes as the evergreen category allows individual indexes, indicators and scoring systems to evolve as the science develops while preserving the purpose of the measurement layer.