Personnel: David Silver at Google DeepMind (Principal Research Scientist)

NoteThe source confirms David Silver's association with DeepMind and his role leading the reinforcement learning team, but uses past tense ('Until recently, I led'), indicating he is no longer in that position. The source does not confirm the specific title 'Principal Research Scientist' or the start date of 2013. The source indicates his current primary role is CEO of Ineffable Intelligence, not a position at Google DeepMind. The record appears to be outdated or the role/org information is incomplete — the source shows he has moved on from DeepMind, but does not provide the specific historical title or start date claimed in the record.