HCD.1:4.3 - Population and Reuse Boundary
A population use may return a distribution over separately identified member or representative demand accounts. It does not create one person’s demand by averaging, and it does not turn the population into a capability holder. A population whole qualifies as a holder only through the independent-System condition of E.23.CDI, outside this one-human-holder pattern.
Any downstream use must preserve the same human holder, configuration, later-Work conditions, effective horizon, compatible evidence window, and receiving decision. HCD.3 may consume the account as evidence input; HCD.4 may consume it as a scope and result frame. Programme comparison (HCD.2) may use the same frame. Deriving demand requires no programme-comparison result.