Join 40,000 readers and get the full notes and summary: https://newsletter.aiwithkyle.com/subscribe Fei-Fei Li just published an essay explaining why large language models are "wordsmiths in the dark" that lack spatial intelligence and grounding in physical reality. World models are a new type of generative AI that can simulate spatially consistent environments obeying physical laws, enabling three revolutionary stages: creative tools for storytelling, accelerated robotics training, and scientific discovery through physics simulations....