Audience member asks whether the decider is effectively a local state machine over many inputs — tracking not just a donation but also the campaign it belongs to. Ismael answers yes: traditional event sourcing forces events into a single stream, forcing eventual-consistency patterns when a decision spans donation and campaign. His newer Sourced version uses Dynamic Consistency Boundaries — events are attribute-bearing objects queried together (donation events for this donation + campaign events for this campaign) to form a virtual globally-ordered stream just for the decision at hand.