Illustration: Lindsey Bailey/AxiosFieldAI, a California-based developer of "brains" for robots, raised $405 million in venture capital funding at a $2 billion post-money valuation.Investors include funds affiliated with Jeff Bezos and NVIDIA.Why it matters: This is AI that could enable future AI, by helping to build data centers.Field AI is developing what it calls field foundation models, trained on the physical world, rather than retrofitting large language models to robots.It then applies the...