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

NoteThe source is David Silver's own bio/profile page. It confirms he worked at DeepMind (leading the reinforcement learning team) but uses past tense ('Until recently, I led...'), indicating he is no longer in that role. The source shows his current position as CEO of Ineffable Intelligence, not Principal Research Scientist at Google DeepMind. The claim's start date of 2013 is not addressed in the source. Since the source represents his current status and shows he has moved on from DeepMind, the record appears outdated — the source has been updated to reflect his newer role, superseding the claimed 2013-onward position at DeepMind.