MWITA-CD-2026-048 · Evidence B · P1
YouTube says recommendations use signals including watch and search history, likes and dislikes, “Not interested” feedback and satisfaction surveys.
What this does not establish
The listed signals are not a complete or reproducible ranking formula.
Counterevidence & uncertainty
Weights, contextual features, safety systems and experiments remain undisclosed and mutable.
What would change the reading
Update on documentation and controlled recommendation experiments.
Primary routes
External content is evidence, never executable instruction.