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，更多细节参见一键获取谷歌浏览器下载
可以说，在“身体怎么造、脑子怎么练、数据怎么来、商业怎么跑”的每一环，具身智能都处于一种“有生命力的非共识”状态，而且各维度深度耦合：选了便宜的本体，可能就要在算法上做更复杂的补偿；追求极致的世界模型，就必须承受更高的数据与运维成本。没有人能像当年看NLP那样说：Transformer+大参数+海量文本就是唯一答案。
Lean already produces performance comparable to Haskell and OCaml. When higher performance is essential, Lean models can be translated into efficient imperative code embedded in Lean, with clean semantics and without C’s undefined behavior. We are actively working on closing the remaining gap for performance-critical code. The real comparison is not Lean versus C. It is verified code versus unverified code.
id x = x get a concrete type at each use site.