Major organizational reshuffling at Google/Alphabet: Demis Hassabis promoted to President of DeepMind and Chief Scientist amid departure of Jeff Dean (25-year AI legend) and top researchers to found Discovery Loop, a new startup focused on automated AI-driven scientific research. Google stock dropped 4% and analysts warn this brain drain may hurt Google's AI competitiveness as rivals like OpenAI and Anthropic advance faster. Google remains a co-investor in Discovery Loop but faces long-term talent attraction challenges.