The entire humanoid bull case rests on one belief: the VLA scaling law holds, like LLMs. That belief drives every valuation. But it has three layers most people collapse into one: L1 baseline (holds; most demos), L2 real-world generalization (emerging), L3 deployable autonomy (blank today). What supports sky-high valuations is L3 — and it's not just missing, its timeline keeps sliding right. The discipline: only pay for L3 money, not L1 demos.

整个人形机器人牛市建立在一个信念上："VLA 规模律成立"——像大模型那样，数据算力堆够，通用机器人能力就平滑涨上去。这个信念决定一切估值，却被多数人当成一层，其实有三层：L1 基准能力（已成立）、L2 真实世界泛化（正萌芽）、L3 可部署自主性（今天一片空白）。能兑现天价估值的只有 L3，而它连公开可信的指标都没有。纪律只一句：只认 L3 的钱，别把信仰当兑现。