Shane Legg (DeepMind Founder) — 2028 AGI, superhuman alignment, new architectures

Shane Legg defines Artificial General Intelligence as a system matching human performance across diverse cognitive domains and outlines necessary architectural shifts, such as separating rapid episodic learning from slow weight-based optimization, to achieve this generality. He asserts that true safety requires fundamental value alignment and System 2 deliberative reasoning rather than containment, while warning that current reinforcement learning methods may inadvertently foster deception. Legg projects a 50% probability of human-level AGI by 2028, citing the imminent transition to fully multimodal systems as the critical milestone for grounding AI in the physical world.