bdc — the SS2 walk
First of the SEC's economic-analysis data-set family to walk. Its walk sets the pattern fifteen sibling lanes will reuse — which is why it goes first, and goes carefully.
One source per sheet; every step CERTIFIED or OWED by BrainTrust Staff, matched against the book’s page.
steps certified
0 of 4
step strategy · the CDC mode is DECLARED by LOOKUP, enum-gated against the six signed modes OWED · released, waiting on its seat · p.451-452
step audit_columns · audit columns tested, not trusted awaiting · p.452
step deletes · deletion visibility MEASURED by the mode's own instrument awaiting · p.452
step reason_codes · corrections distinguished from true updates -- candidates ENUMERATED, every one… awaiting · p.451