Authority cascade is why deep topical coverage produces better citation outcomes than scattered single-page coverage. A domain with twenty interconnected pages addressing different aspects of the same subject area builds an authority signal that propagates across all twenty pages, not just the one that received an initial citation.
The IEO Engine architecture deliberately exploits authority cascade through topical clustering and dense internal linking. A new page added to an existing topical cluster inherits authority from the surrounding content rather than starting from zero.